Which correctly describes Earth's population over the centuries?
O A. It has risen steadily.
B. It has remained steady overall.
C. It has risen at an increasing rate.
O D. It has declined in some places due to migration.
SUBM

Answers

Answer 1
C

It has risen at an increasing rate throughout time. This rate hasn’t been steady due to many reasons. See the attached photo for details.

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Which Correctly Describes Earth's Population Over The Centuries?O A. It Has Risen Steadily.B. It Has
Answer 2

Earth's population over the centuries has risen at an increasing rate. So, the correct option is C.

How the population of Earth is increasing?

This sharp increase in population has been primarily caused by an increase in the proportion of individuals reaching breeding age, the gradual extension of human life expectancy, growing urbanization, and quickening migration. This expansion has been accompanied by significant changes in the fertility rate.

One of the key reasons for India's population expansion is a drop in death rates brought on by better medical services and a steady birth rate. The widespread illiteracy in India makes people believe that "children are god's blessings," which makes them opposed to the idea of "family planning." Earth's population over the centuries has risen at an increasing rate.

Therefore, the correct option is C.

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Related Questions

If your body lacks enzymes that break down carbohydrates, it would be unable to get __A__ for energy production. If you lacked the enzyme to digest proteins, you may not absorb enough __B__.

Answers

Answer:

Glucose and amino acid.

Explanation:

If your body lacks enzymes that break down carbohydrates, it would be unable to get glucose for energy production while on the other hand, if you lacked the enzyme to digest proteins, you may not absorb enough amino acid that our body needs for the formation of muscles. Enzymes play a great role in the breakdown of macro food particles into simpler molecules so that it can be absorbed by the cells.

Answer:

A: Sugar Molecules

B: Amino Acids

Hope this helps!

Explanation:

The group members met on Saturday working on the project together.

Which revision corrects the error in the sentence?

The group members who were working on the project together met on Saturday.
Working on the project together on Saturday, the group members met.
On Saturday, the group members who were working on the project met together.
The group members met working on the project together on Saturday.

Answers

Answer:

Working on the project together on Saturday, the group members met

Answer:

The answer is B.

Explanation:

What is nitrogen fixation?List all the ways in which nitrogen fixation takes place in nature.​

Answers

Answer:

Hey mate.....

Explanation:

This is ur answer.....

Some forms of bacteria can convert atmospheric nitrogen into usable forms such as nitrates and nitrites. Such nitrogen fixing bacteria are commonly found in the roots of leguminous plants. These usable forms of nitrogen are absorbed by plants to produce many compounds such as amino acids, which in turn form proteins.

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A scientist observes rock masses that have moved past each other in opposite horizontal directions. Which feature does the scientist observe?

plateau
syncline
strike-slip fault
fault-block mountai

Answers

The scientist observes strike slip fault feature when rock masses that have moved past each other in opposite horizontal directions.

Answer:

Strike slip fault

Explanation:

when it masses moved away against horizontal directions.

. Q.. List any two advantages associated with water stored in the ground.​

Answers

Answer:

It does not evaporate.

It recharges wells near the area.

It provides moisture to the vegetation.

It does not provide breeding grounds for mosquitos , like stagnant water in lakes and ponds.

It is relatively protected from contamination by animal and human waste.

Explanation:

9.
Which is an environmental factor that affects skin color in humans?
O number of genes inherited
O amount of sunlight absorbed
O number of linked genes
O amount of food consumed

Answers

QUESTION:-

Which is an environmental factor that affects skin color in humans?

O number of genes inherited

O amount of sunlight absorbed

O number of linked genes

O amount of food consumed

ANSWER:-

AMOUNT OF SUNLIGHT ABSORBED.

Number of gene for color of the skin is same in all the human beings and also it's a genetic factors is there will be any absence of gene due to its deletion AMOUNT OF SUNLIGHT it is variable in variable reasons which is a imp factor for the color in variation in earth. In regions near to the equator have high amount of the light so they have darker skin color then the people near the poles as there is less amount of light .Number of gene inherited is also same for each and every individual for single species for human which is 378 gene loci and if there is any variation in number due to any genetics disorder it would be a genetic factor again.amount of food consumed is different for different people with same color in same region as it only depends on the work which is done by the individual in the society for its existence. though it is a environmental factor bit it didn't effect color of the species.

SO ACCORDING TO ABOVE DETAILS WE CAN CONCLUDE (2) AMOUNT OF THE SUNLIGHT IS THE ENVIRONMENTAL FACTOR WHICH IS RESPONSIBLE FOR THE COLOR OF THE SKIN IN HUMANS

Which is the difference between an antibiotic and an antiviral?

Answers

Answer:

There are no options in this question, the options are as follows:

A. Antibiotics build up immunity, and antivirals increase white blood cells.

B. Antibiotics treat the symptoms, and antivirals destroy the causing organism.

C. Antibiotics are in liquid form, and antivirals are in mist form.

D. Antibiotics treat patients who have Staphylococcus, and antivirals treat patients who have the flu.

The answer is D

Explanation:

Specific drugs are used to curb infection or diseases caused by specific pathogens. An infection can be caused by either bacteria, virus or fungi. Considering their different mechanism of infection, viral infections are treated with the use of ANTIVIRAL DRUGS while bacterial infections are treated with the use of ANTIBIOTICS.

According to this question, staphylococcus is a bacterial genus and hence, patients with staphylococcus can be treated with antibiotics while flu is a viral disease, hence can only be treated with antivirals.

Answer:

A. Antibiotics build up immunity, and antivirals increase white blood cells.

Explanation:

edg

In order for natural selection to occur, organisms must (select all that apply) Check All That Apply have variation that can be passed from one generation to the next. have variation that can be passed from one generation to the next. have differential reproductive success. have differential reproductive success. survive longer than another organism. survive longer than another organism. compete for resources. compete for resources. have adaptations to their environment. have adaptations to their environment.

Answers

Answer:

have variation that can be passed from one generation to the nextsurvive longer than another organismhave adaptations to their environment. have differential reproductive success.

Explanation:

Naturla selection is the survival and reproduction of individuals due to different phenotypes. The naturla selection represents a mechanism of evolution and changes in traits of species.

In order for natural selection to occur, organisms must :

have a variation that can be passed from one generation to the next.have differential reproductive success.

Natural Selection is a mechanism of evolution that occurs when there is a heritable variation for a trait and individuals with one version of the trait have greater reproductive success than do individuals with a different version of the trait.

In order for natural selection to occur, three conditions must be met:

There must be variation for the particular trait within a population.The variation must be inheritableIndividuals with one version of the trait must produce more offspring than those with a different version of the trait.

Thus,

In order for natural selection to occur, organisms must :

have a variation that can be passed from one generation to the next.have differential reproductive success.

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Can someone please help me!

Answers

The answer is C.

It is the site of gas exchange in the lungs.

Gas exchange occurs only in alveoli. Alveoli are made of thin-walled parenchymal cells, typically one-cell thick, that look like tiny bubbles within the sacs. Alveoli are in direct contact with capillaries (one-cell thick) of the circulatory system.

Question 7 of 10
A cell membrane is very specific about what it allows across. How does this
help the cell?
O A. Transport proteins allow only enzymes to pass through the
membrane.
O B. It is better for the cell if most molecules are prevented from
entering.
O C. The cell works better when it contains fewer proteins.
D. It helps the cell absorb as many different molecules as possible.

Answers

Answer:

The answer is D

Explanation:

As the cell is mostly dependant on ingested materials so this will help the cell to grow and perform other important activities in the cell

These penguins are all members of the species Aptenodytes patagonicus.

Answers

Answer:

Organisms of the same species can live in different areas, while organisms of the same population live in only one area.

Explanation:

Answer:

Option D

Explanation:

Populations are all in one area

The sticky mass in some chemicals on heating was known as _______________________ fibre or fibre _________.

Answers

Answer:

Americans chemical society

What goes on during interphase?

Answers

Explanation:

During interphase, the cell grows (G1), replicates its DNA (S) and prepares for mitosis (G2). ... Interphase is the 'daily living' or metabolic phase of the cell, in which the cell obtains nutrients and metabolizes them, grows, replicates its DNA in preparation for mitosis, and conducts other "normal" cell functions.

Explanation:

During interphase, the cell grows and the nuclear DNA is duplicated. Interphase is followed by the mitotic phase. During the mitotic phase, the duplicated chromosomes are segregated and distributed into daughter nuclei. The cytoplasm is usually divided as well, resulting in two daughter cells

What sources must health care workers use when deciding which abbreviations and symbols to use on the job?
a. Those listed in their textbooks
b. Those approved by the facility in which they work
c. Those listed in medical dictionaries and reference books,
d. Those provided by their professional organization.

Answers

B is the correct answer
The correct answer is b

why is rna a polymer and a macromolecule

Answers

Answer:

RNA is a polymer because it is made up of many monomers called nucleotides. Moreover, RNAs can form macromolecules because many RNAs are large molecules (i.e., polynucleotide chains).

Explanation:

Ribonucleic acid (RNA) can be defined as a single-stranded nucleic acid polymer of the four nucleotides. In RNA, each nucleotide is composed of a 1-ribose sugar, a 2-phosphate group and 3-one of four types of nitrogenous bases: Adenine (A), Cytosine (C), Guanine (G), and Uracil (U), which are covalently bonded to form polynucleotide chains. There are different types of RNAs such as mRNA, tRNA, rRNA, miRNA, circ-RNAs, lncRNAs, etc. Many of these RNAs form large single-stranded (ss) molecules, i.e., polynucleotide chains. For example, an mRNA sequence may have a length of 5,000 nucleotides (5 kb) or even more, and there are RNA viruses that have more than 20000 nucleotides (20 kb) in length.

Can someone please help me!

Answers

Answer:

thats the 2 number point okay,plasma contains platelets ,ok

What are the effects of global warming on the earth over time?

Answers

Effects that scientists had predicted in the past would result from global climate change are now occurring: loss of sea ice, accelerated sea level rise and longer, more intense heat waves.

What mechanical layer lies above the core?
Answer here

Answers

The mechanical layer lies above the core is the mantle. It is the layer that is found after the core and it is the second layer of the Earth . It is about 84% of the Earth’s volume.

Answer:

The mechanical layer that lies above the core is the mantle. It is a layer that is found after the core and is the second layer of the Earth. It is about 84% of the Earth's volume. It has a thickness of 2900 kilometers.

Waiting for your Prompt response.

The diagram below shows a light ray striking Medium A and Medium B at the same angle. (4 points)

A rectangle labeled Medium A is drawn on the left. A ray of light travels through air and strikes the surface of medium A making an angle of 50 degrees with the vertical. The light ray bends towards the vertical as it travels through Medium A and makes an angle of about 15 degrees with the vertical. A rectangle labeled Medium B is drawn on the right. A ray of light travels through air and strikes the surface of medium B making an angle of 50 degrees with the vertical. The light ray bends towards the vertical as it travels through Medium B and makes an angle of about 25 degrees with the vertical.

Which statement is correct?
The speed of the light ray is the same in air and Medium A.

The speed of the light ray is the same in air and Medium B.

Medium A and Medium B have different densities because light refracts at different angles.

Medium A and Medium B have the same density because the light ray strikes both at the same angle.

Answers

Answer:

A the speed of the light ray is the same in air and medium

if the velocity of a vehicle starting from rest reaches 5m/2s in 2seconds, is the velocity of the vehicle uniform ?explain.​

Answers

Explanation:

Avg speed × total times = total distance

20×25=500

Since acceleration in the 1st interval is same as deceleration in the 3rd interval and deceleration is from the same velocity achieved after acceleration, t

1

=t

3

s

1

=

2

1

×5t

1

2

s

2

=(5t

1

)t

2

s

3

=(5t

1

)×t

3

2

1

×5×t

1

2

=(5t

1

)×t

1

2

1

×5×t

1

2

s

1

+s

2

+s

3

=5t

1

t

2

+5t

1

2

⇒5t

1

2

+5t

1

t

2

=500−−−−1

2t

1

+t

2

=25−−−−2

Solving (1 ) and (2) ⇒t

1

=5,t

2

=15sec

Explain how homologous and the fossil records support evolution.
Thanks so much!!!

Answers

Answer:

Los fósiles, una prueba de la evolucion. El estudio de los fósiles nos da una idea muy directa de los cambios que sufrieron las especies al transformarse unas en otras; existen muchas series de fósiles de plantas y animales que nos permiten reconstruir cómo se fueron adaptando a las cambiantes

Explanation:

Answer:

homologous: have identical position, value, or structure

Fossils: In the oldest rocks area unit fossils of the best organisms and within the newest rocks area unit fossils of additional advanced organisms.

 

Explanation:

The evolution theory is supported by multiple sorts of evidence: homologous structures show common ancestry, whereas similar selective pressure will manufacture similar variations. analogous structures (beneficial features).

In the oldest rocks area unit fossils of the best organisms and within the newest rocks area unit fossils of additional advanced organisms. This supports Darwin's organic process theory, whereby straightforward life forms {progressively|increasingly|more and additional} evolved into more advanced. Proof of adolescence forms comes from fossils.

Which of the following BEST completes the analogy?

Answers

Answer:

there is nothing under the question.

Explanation:

Answer:

What are the options . comment

Help me please picture included

Answers

Answer:

umm I'm sorry but the picture is not coming like I mn its blank

Which of the following is an example of an adaptation?

A. Ducks swim near the shore by a picnic area, where food is always available.

B. A dog walks without pulling on its leash.

C. Wolves work together to catch prey.

D. Birds living near a highway learn not to fly away every time a car passes.

(Zoom the picture for better quality)

Answers

the answer should be D

Answer:

wolves work together to catch prey

What is a photosynthetic pigment

A. A man-made compound that reacts to light
B. An oxygen based compound that captures light energy.
C. A light sensitive compound that changes color.
D. A colored compound that captures light energy.

Answers

Answer:

Answer D is correct.

Explanation:

A colored compound that captures light energy.

This photosynthetic pigment means the pigment which is present in chloroplasts to absorb or capture the light energy to do photosynthesis.

Hope this helps you

Which of the following statements is MOST accurate?
a. Most people who engage in gambling activities become addicted to it
and end up taking bankruptcy because they cannot pay their bills.
b. People at lower income levels lower use a larger percentage of their
income to buy lottery and scratch tickets than people at higher levels of
income.
c. Gambling is a moral issue, with little or no economic or financial impact
on individuals or society.
d. Casinos only have a positive impact on communities because they create
jobs and generate wealth.

Answers

Answer:

C

Explanation:

Which of the following is a way of storing carbon in organic material?

A. Consumption
B. Respiration
C. Burning fossil fuels
D. All of these

Answers

A way of storing carbon in organic material is Burning fossil fuels or D all of these

The ways of sorting carbon in organic material is consumption, respiration, and fuel burning. The correct option is D.

What is organic material?

Organic matter, also known as organic material or natural organic matter, is a massive source of carbon-based compounds detected in natural and engineered, terrestrial and aquatic environments.

There can be several ways to store carbon including consumption, respiration, and burning fossil fuel, etc.

Carbohydrates, lipids, proteins, and nucleic acids are the four primary types of organic compound present in all living things.

Organic compounds are crucial because carbon is found in all living organisms. They are the essential parts of many of the Earth's cycles.

The carbon cycle, for example, encompasses the exchange of carbon between plants and animals during photosynthesis and cellular respiration.

Thus, the correct option is D.

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Iron-55 has a half-life of 3 years. How much of a 40 gram sample will remain after 12 years? A. 0 grams B. 4 grams C. 2.5 grams D. 20 grams

Answers

Answer:

[tex]\boxed {\boxed {\sf C. \ 2.5 \ grams }}[/tex]

Explanation:

We are asked to find how much of a 40 gram sample remains after 12 years.

Iron-55 has a half-life of 3 years. Therefore, after 12 years, 4 half-lives have been completed.

12 years/3 years = 4 half-lives

Every time a half-life is completed, half of the sample's mass decays. Remember we start with a 40 gram sample.

1 half- life: 40 g / 2 = 20 g 2 half-lives: 20 g / 2= 10 g 3 half-lives: 10 g / 2 = 5 g4 half-lives: 5 g / 2 = 2.5 g

There is also a formula that can be used to solve this problem.

[tex]A= A_o(\frac {1}{2})^{\frac{t}{hl}[/tex]

Where A₀ is the initial amount, t is the time, and hl is the half-life.

We know 40 grams is the inital amount, 12 years is the time, and 3 years is the halflife.

A₀= 40 g t= 12 hl= 3

[tex]A= 40 \ g (\frac{1}{2})^\frac{12}{3}[/tex]

[tex]A= 40 \ g (\frac{1}{2})^4[/tex]

[tex]A= 40 \ g * 0.0625[/tex]

[tex]\bold {A= 2.5 \ g}[/tex]

After 12 years, 2.5 grams of Iron-55 will remain.

A tube with a membrane covering the bottom is placed in a beaker. The membrane allows water to flow through but not salt or glucose. The tube contains an aqueous solution with 4% salt and 20% glucose and the beaker contains an aqueous solution with 12% salt and 6% glucose. How could you describe the solution in the beaker compared to the solution in the tube

Answers

Answer:

The solution in the tube is hypertonic to the solution in the beaker.

Explanation:

To compare the solutions, find the total amount of solutes in both the tube and beaker.

The tube has 4% salt and 20% glucose, so it has 24% solute.

The beaker has 12% salt and 6% glucose, so it has 18% solute.

Since 24 is larger than 18, this means the tube has more solute.

Since the tube has more solute and less water compared to the beaker, it is hypertonic to the beaker.

So, the answer is that the solution in the tube is hypertonic to the solution in the beaker.

Solutions are hypertonic or hypotonic to other solutions according to their solute concentration grade. In the exposed example, the beaker aqueous solution is hypotonic to the tube solution, meaning it is less concentrated.

--------------------

Available data:

The membrane allows water to flow through but not salt or glucoseThe tube contains an aqueous solution with 4% salt and 20% glucoseThe beaker contains an aqueous solution with 12% salt and 6% glucose

We need to describe and compare solutions.

To do it, first, we will review some theoretical framework.

When talking about solutions in compartison with the cell content, we can classify them as follows,

HYPERTONIC ⇒ A hypertonic solution has a higher concentration of solute than the cell. This means that in the cell interior, the solute concentration is lower than in the solution itself.

ISOTONIC ⇒ The solute concentration is the same inside the cell and outside.

HYPOTONIC ⇒ A hypotonic solution has a lower concentration of solute than the cell. This means that in the cell interior, the solute concentration is higher than in the solution itself.  

When a cell is in a hypotonic solution, through osmosis, water moves toward the cell.  

Osmosis is the phenomenon that occurs when two dilutions of different concentrations -in this example, the interior of the tube and the beaker- are separated by a semipermeable membrane.

The membrane allows the pass of water but not solute. Hence, water can move from the most diluted side to the less diluted one.  

What we need to consider is

• When a cell with semipermeable membrane is placed in a hypotonic solution, water enters the cell.

• When a cell with semipermeable membrane is placed in an isotonic solution, there is no water movement.

• When a cell with semipermeable membrane is placed in a hypertonic solution, water gets out of the cell.

In simple words, in the proposed experiment, glucose and salt -solutes- can not cross the membrane, but water can. The tube represents a cell. So,

The tube has 4% salt and the beaker 12 % saltThe tube has 20% glucose and the beaker 6% glucose.

To make the analysis easier, we can add the concentration percentages of glucose and salt at each side of the membrane, and then compare them.

The tube contains an aqueous solution with 24% solute (4% salt + 20% glucose)The beacker contains an aqueous solution with 18% solute (12% salt + 6% glucose)

We can see that the concentration of solute is higher in the interior of the tube than in the beaker. This difference suggests that water will move forward to the tube interior.

According to this analysis, we can say that

The tube aqueous solution is hypertonic to the beaker solution → More concentrated

The beaker aqueous solution is hypotonic to the tube solution → Less concentrated

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which of the following statement about carbon dixoide is not true?

a.) increased carbon dioxide in the atmosphere increases the green house effect

b.) carbon dioxide is a greenhouse gas

c.) atmospheric carbon dioxide levels have slowly declined over the last 50 years

d.) burning fossil fuels can increase carbon dioxide levels in the atmosphere

Answers

Answer:

c is not true

Explanation:

c is correct answer because carbon dioxide have been increased not decreased

Other Questions
13 A traffic roundabout has a circular gardenin the centre and two lanes for trafficencircling the garden. The diameter of thegarden is 16 metres and each lane is 3 metreswide. Each lane is to be resurfaced. Calculatethe area to be resurfaced. Answer in squaremetres to the nearest whole number. A hunter residing in State A visited a website created and operated by a hunting equipment company. The company is a State B corporation, and its headquarters and all its facilities are in State B. It sells its products in several stores in State B and through its website. Its marketing efforts and most of its sales are in State A and State B. Using the company's website, the hunter ordered a hunting stand. The hunter paid for the stand and shipment to State A by providing his credit card information on the company's website. After the stand arrived at the hunter's home in State A, the hunter used the stand while on a hunting trip in State Ca very popular hunting destination. The stand collapsed, causing severe injuries to the hunter.The hunter filed a products liability action against the company in a State C court. The company filed a motion to dismiss the action on the ground that the State C court lacks personal jurisdiction over it. Although the company's website is accessible in State C, the company does not otherwise advertise there, and it does no business there. There is no evidence that the company has sold any products in State C. Does the company have sufficient contactswith State C such that a State C court may exercise personal jurisdiction over it?(A) Yes, because the company's website is continuously accessible in State C so that people there may purchase products from the company at any time.(B) Yes, because the company could foresee that its customers would carry the company's hunting products on hunting trips to other statesparticularly states where hunting is popular.(C) No, because personal jurisdiction cannot be based on Internet contacts.(D) No, because the company does not have sufficient purposeful contacts with State C. 3 investiga sobre la estructura poltica de los EstadosUnidos Drag the tiles to the correct boxes to complete the pairs.Find the missing the coordinates.(2, -2)(-5, -5)(2, 1)(-1, -1)A(-5, -1), B(1, -1), and C(1, -5) arethree vertices of rectangle ABCD. Whatare the coordinates of vertex D?arrowRightA(2, 5), B(6, 5), and C(6, 1) arethree vertices of square ABCD. 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