A biologist wants to know which fertilizer will result in the tallest pea plants. A chemist wants to know how much energy is required to change liquid water into water vapor. A geologist wants to know which type of soil is most permeable to water. A physicist wants to know what type of material reflects the most light.

Which of the following methods can best be used by all of these different scientists to answer their individual questions?
A.
taking a survey of their fellow researchers
B.
drawing a diagram as a model
C.
using popular magazines as reference materials
D.
performing a controlled experiment

Answers

Answer 1

Answer:

performing a controled experiment

Explanation:

this is because they can experience it themselcves, without having risk of external disturbance that would change tha outcome

Answer 2

Answer:

The answer is D - performing a controlled experiment

Explanation:


Related Questions

Identify the remaining processes and components of the carbon cycle. organisms release CO2 atmospheric CO2 plants use CO2 combustion fossil fuels form

Answers

Answer:

Carbon dioxide (CO2) is an important component in atmosphere and Carbon cycles allows movement of carbon dioxide from the atmosphere into living things and from living things to atmosphere again.

There are four main processes included in carbon cycle that is photosynthesis, decomposition, respiration and combustion.

In respiration, living organism such as animals and humans intake oxygen and releases CO2 in atmosphere.

In the process of photosynthesis, plants take CO2 from atmosphere and convert it into oxygen (O2) in the presence of sunlight and water.

In Decompoition, the bacteria present in soil decomposes dead matter by  breaking down into simpler organic or inorganic matter such as water,  carbon dioxide, and mineral salt. The nutrient cycle then recycle the carbon dioxide and send back to teh atmosphere.

In combustion, the burning of fossil fuel in cars and industries releases carbon dioxide back into the atmosphere.

So, the components of carbon cycel include atmosphere, terrestial biosphere, ocean ( dissolved inorganic carbon), and  sediments ( fossil fuels).

.

Answer:

Here's what I got for this one

Explanation:

Hope it helps!

Anaerobic respiration happens in muscle cells and yeast cells.
The equation describes anaerobic respiration in muscle cells.
glucose ---> lactic acid
How can you tell from the equation that this process is anaerobic?
would the answer just be no co2 is produced?

Answers

Answer:

Am I think Co 2 will not be released but rather Glucose will be released

Explanation:

This is because

C6H12O6>2C5H5OH+2Co2 + Energy

there fore glucose is produced

From the equation "glucose → lactic acid," we can infer that the process is anaerobic. One way to determine this is by the absence of carbon dioxide (CO2) in the equation.

Glucose is entirely oxidized to create carbon dioxide, water, and energy during aerobic respiration, which takes place in the presence of oxygen.

Yet, in anaerobic respiration, the lack of oxygen causes an incomplete breakdown of glucose, producing additional byproducts such lactic acid as a result.

Muscle cells have the ability to transition to anaerobic respiration in order to satisfy their energy needs when there is insufficient oxygen.

Muscle cells have the ability to engage in anaerobic respiration, which produces ATP (adenosine triphosphate), the cellular energy currency, by partly metabolizing glucose, during hard exercise or when oxygen supply is constrained.

During anaerobic respiration, lactic acid builds up in muscle cells, which can lead to exhaustion and pain.

To know more about aerobic respiration:

https://brainly.com/question/30710419

#SPJ2

Which of the following statements is true about the role of water in celular respiration?
It reacts with glucose.
It reacts with oxygen
It is one of the beginning compounds.
It is one of the ending compounds.

Answers

Answer:

it is one of the ending compounds

Explanation:

Answer:

This one is D Have a good day

Explanation:

what is the importance of reflex actions?

Answers

Explanation:

to minimize any damage to the body from potential harmful conditions

An involuntary motor response to a sensory stimulus is known as reflex.Reflexes perform many types of jobs for our central nervous sustem.such as:

they protect us from danger.they help us move our body.they help us to see etc..

HOPE THIS HELP YOU..

IF U FOUND THIS HELPFUL THEN MARK IT AS BRAINLIEST..

THANK YOU

Select the statements that accurately describe endocytosis.

a. The cell forms proteins that move substances into the cell against a concentration gradient.

b. The cell selectively filters small nutrients through specialized membrane pores.

c. The cell membrane pinches off to form an extracellular vesicle joined to the cell by filaments.

d. The cell membrane engulfs a particle in the cytoplasm and forms a vesicle around it.

e. The cell expends energy to transport materials into the cytosol.

Answers

Answer:

The correct answer is:

The cell membrane engulfs a particle in the cytoplasm and forms a vesicle around it.  (d.)

Explanation:

Endocytosis is a type of active transport, where particles such as (large molecules, parts of cells, and even whole cells) are moved into cells.

The various types of endocytosis has a common feature of:

1. invagination of plasma membrane forming pockets around the target particle.

2. the pocket pinches off from original plasma membrane

3. forming a new intracellular vesicle containing the target particle.

The different types of endocytosis includes

a. pinocytosis (cell drinking): takes in extracellular fluids

b. phagocytosis (cell eating): large solid particles are taken in by cells

c. receptor-mediated endocytosis: here, receptor proteins on the cells surface, binds to complementary proteins on the surface of the target particles before endocytosis occurs.

Which of these are characteristics of reptiles? Check all that apply.
They undergo internal fertilization.
Their urine is concentrated.
They use their skin for gas exchange.
They have two-chambered hearts.
They are covered in scales.

Answers

the answer is a,b and e

Reptiles are a class of vertebrates made up mostly of snakes, turtles, lizards, and crocodilians. The options (A), (B) and (E) are correct.

What are the characteristics of reptiles?

Reptiles, as most commonly defined are the animals in the class Reptilia, a paraphyletic grouping comprising all sauropsids except birds. Living reptiles comprise turtles, crocodilians, squamates and rhynchocephalians.

Moreover, the major groups of living reptiles—the turtles (order Testudines), tuatara (order Rhynchocephalia [Sphenodontida]), lizards and snakes (order Squamata), and crocodiles (order Crocodylia, or Crocodilia)—account for over 8,700 species.

Therefore, the name "reptile" comes from Latin and means "one who creeps". All living reptile species are cold blooded, have scaly skin, and lay cleidoic eggs. They excrete uric acid (instead of urea), and have a cloaca. A cloaca is a shared opening for the anus, urinary tract and reproductive ducts.

Learn more about reptiles:

https://brainly.com/question/29524946

#SPJ5

A front refers to?HURRY

Answers

Answer:

A. Where to air masses meet

Explanation:

Answer:

A. the location where two air masses meet.

Explanation:

When do the respiratory and circulatory systems work together?
O A. To promote digestion
O B. To stop bleeding
C. To fight infections
O D. To supply nutrients
SUBMIT

Answers

D to supply nutrients

can someone write me a small introduction about reflexes​

Answers

reflex is an involuntary or automatic, action that your body does in response to something — without you even having to think about it

reflex action often involves a very simple nervous pathway called a reflex arc. A reflex arc starts off with receptors being excited. They then send signals along a sensory neuron to your spinal cord, where the signals are passed on to a motor neuron

webbed feet to help with swimming is it physical or
behavior adaptation ​

Answers

Answer:

It is a physical adaptation

Explanation:

Webbed feet does not change the way the animal acts but it had to adapt webbed feet physically to survive in its habitat/surroundings

-. What are the two steps involved in the creation of proteins? Define
each. Which step is the job of the ribosomes?

Answers

Answer:

Explanation:

Protein synthesis is the process in which cells make proteins. It occurs in two stages: transcription and translation. Transcription is the transfer of genetic instructions in DNA to mRNA in the nucleus. In eukaryotic cells, transcription takes place in the nucleus.

I hope this helps! <3

(googles words, not mine)

If I put a plant under Greenlight it would be able to photosynthesize true or false

Answers

Answer:

false

Explanation:

chlorophyll does NOT absorb green or blue light strongly

Answer:

yes it's true, photosynthesis will occur

As a scientist working for an anti-bioterrorism task force, you are asked to evaluate some biological samples for the presence of Yersinia pestis, the organism that causes the plague. After confirming that the samples do contain Y. pestis, you instruct your team to begin sequencing the strain. Since the genome sequence of Y. pestis is already known, why would sequencing this strain be useful?

Answers

Answer:

To gather relevant knowledge about their origin and to determine if the strain has been genetically modified.

Explanation:

A researcher researching with the anti-bioterrorism working group, they are required to assess certain blood specimens only for existence of Yersinia pestis, the organisms which causes the disease.

Since verifying that perhaps the varieties showed Y. Pestis, they are instructing their group to start sequence alignment the strains. So, this is to collect specific knowledge about their origin and to assess if the strain has also been genetically modified.

The primary source of energy in the cells is a nutrient called

Answers

Explanation:

The digestible carbohydrates in an animal's diet are converted to glucose molecules and into energy through a series of catabolic chemical reactions. Adenosine triphosphate, or ATP, is the primary energy currency in cells

2 Paragraph summery on how Anna Garcia died

Answers

Answer:

skvnewv

Explanation:

hbcjabvjkabhsAnswer:

skvnewv

Explanation:

hbcjabvjkabhsAnswer:

skvnewv

Explanation:

hbcjabvjkabhsAnswer:

skvnewv

Explanation:

hbcjabvjkabhsAnswer:

skvnewv

Explanation:

hbcjabvjkabhsAnswer:

skvnewv

Explanation:

hbcjabvjkabhsAnswer:

skvnewv

Explanation:

hbcjabvjkabhs

Which of the following categories includes all of the others?
Species
Population
Community
Ecosystem

Answers

Answer: population

Explanation: because is the major factor and the more important to order al species

How dose natural selection lead to evolution

Answers

Answer:

Naturally selected organisms will survive and reproduce better adapted to the environment. This indicates that this model organism's beneficial allles are passed to offspring. The selection cycle contributes to adaptation for several years.

Explanation:

Hope this helps.

As a conservationist, what are your top three concerns regarding the hydroelectric dam and the biodiversity of the region?

Answers

Answer:

I’m concerned about how the dam will affect the water flow in the river, which can affect the behaviors of fish. I’m also concerned that some fish and aquatic animals might get sucked into the dam. Finally, I worry that the dam could malfunction and cause flooding, which could damage the ecosystem.

Explanation:

Top three concerns regarding the hydroelectric dam and the biodiversity of the region

Hydropower can also cause environmental and social problems. Reservoirs drastically change the landscape and rivers they are built on. Dams and reservoirs can reduce river flows, raise water temperature, degrade water quality and cause sediment to build up. This has negative impacts on fish, birds and other wildlife.

How do hydroelectric power plants affect the environment?

Hydroelectric plants alter the natural habitats of freshwater species in the areas they are located. It changes the concentration of nutrients, water temperature, and the river's flow. Downstream river flow suffers a loss of water and silt loads, reducing water quality.

To learn more about Hydroelectric plants, refer

https://brainly.com/question/8934285

#SPJ2

Which of the following occurs during artificial cross pollination? A. A different plant species is used to pollinate another plant. B. The plants reproduce sexually by self pollination. C. The scientist completely controls the transfer of pollen from one flower to the stigma of another.

Answers

Answer:

c

Explanation:

its artificial= done by humans

During artificial cross-pollination, the scientist completely controls the transfer of pollen from one flower to the stigma of another.

What do you mean by Cross-pollination?

Cross-pollination may be defined as a type of pollination in which sperm-laden pollen grains are transferred from the cones or flowers of one plant to egg-bearing cones or flowers of another.

Any artificial thing requires the interference of human activity. This activity by human increase the chance of those who give better productivity in every aspect.

Therefore, during artificial cross-pollination, the scientist completely controls the transfer of pollen from one flower to the stigma of another.

To learn more about artificial cross-pollination, refer to the link:

https://brainly.com/question/1048945

Most eubacteria are ____________________ because most rely on nutrition from other organisms.

Answers

Answer:

heterotrophic(Heterotrophic Eubacteria are among the most abundant and diverse bacteria on Earth,)

Explanation:

plzz mark me brainliest

imaginary essay

Exchange place with best friend​

Answers

It was one Sunday morning. When me and my best friend ( NAME GOES HERE) switched lives we were playing a game and the game had a lot to do with holding hands

What is the advantage for birds of not having a bladder?

Answers

Answer:

Explanation:

The urinary bladder is a flexible sac that can expand and contract and that holds urine.

Urea is excreted mainly by birds and it happens to be the main chemical in urine, without the water in it, the birds excrete just solid droppings instead of as a liquid.

Now, birds physiology is such that they have only one opening to get rid of their (solid) waste and they do not have a bladder.

4. Is predation a density-dependent or density-independent factor?

Answers

Answer:

The correct answer is density-dependent factor.

Explanation:

The factors whose influences on the growth or size of the population changes with the density of the population are known as the density-dependent factors. The availability of food, disease, predation, and migration are some types of density-dependent limiting factors.  

One of the density-dependent factors in nature is predation, predation confines various populations. The population of the prey and the predator encircle towards each other, with the population of the predator somewhat lagging behind the population of the prey.  

With the increase in the population of the prey, the predator gets more to eat, and thus the population of the predator increases. With the increase in the predator population, pressure imparts on the prey population and it starts to decline. The decline in the availability of the food eventually makes the population of the predator to decline. Therefore, it can be seen that both the population of the prey and the predator are affected by predation, that is, a density-dependent factor.  

Felis concolor is a species of cat that expresses incomplete dominance in fur color. RR= white fur, rr= black fur, and Rr= grey fur. If you crossed a homozygous dominant male with a homozygous recessive female, what would the resulting genotype and phenotype be?

Answers

Answer:

Explanation:

genotype-

100% Rr

phenotype-

100% grey

Within a population of butterflies, the color brown (B) is dominant over the color white (b) and 32% of all butterflies are white. Given this simple information, which is something that is very likely to be on an exam (teehee), calculate the following:
1. The percentage of butterflies in the population that are homozygous dominant
2. The number of heterozygous butterflies if the population contained 4,216 individuals

Answers

Answer:

48% Heterozygous of the population, 12% Homozygous dominant size.

Explanation:  

Given the characteristics of its population,

Brown (B) predominates over white (b) color.

Recessive phenotype frequency (Q)= 40%= 0.4

According to the Hardy-Weinberg principle, the frequency is given by P and Q for a population with the dominant and recessive trait, where P+Q=1 preserves the equilibrium of the population allele.

So then, P = 1-Q

P=1-0.4=0.6

Heterozygotic butterflies = 2PQ

So, 2PQ= 2x0.6x0.4=0.48

That is, 48 percent of people are heterozygous

Homozygous dominant individual frequency = 1-(40 + 48) = 12 i.e. 12%

Answer:

C. 0.48

Explanation:

What are the 5 main sinks of carbon

Answers

The carbon cycle is the biogeochemical cycle by which carbon is exchanged among five spheres of the Earth, carbon (C) sinks: the biosphere, pedosphere, lithosphere, hydrosphere, and atmosphere (These are not mutually exclusive, see Glossary).

Answer:

bio, pedosphere, litho, hydro, a t m o

Explanation:

sphere

Which is a possible path of the movements of nitrogen in the nitrogen cycle?
(A) soil - airplants air animals - soil
B) soil animals plants
soil
animals soul plants - air
(D) air - soil plants animals soil - air​

Answers

Answer:

B) soil animals plants

soil

Explanation:

Nitrogen is taken up by plant roots and combined into organic substances in the plant, such as enzymes, proteins and chlorophyll. ... Plant and animal wastes decompose, adding nitrogen to the soil. Bacteria in the soil convert those forms of nitrogen into forms plants can use. Plants use the nitrogen in the soil to grow.

what is the relationship between peripheral resistance and blood pressure ? between blood viscosity and blood pressure

Answers

Answer:

Peripheral vascular resistance (systemic vascular resistance, SVR) is the resistance in the circulatory system that is used to create blood pressure, the flow of blood and is also a component of cardiac function. When blood vessels constrict (vasoconstriction) this leads to an increase in SVR.

The relationship between BP and viscosity is such that, given a constant systolic BP, if blood viscosity increases, then the total peripheral resistance (TPR) will necessarily increase, thereby reducing blood flow. Conversely, when viscosity decreases, blood flow and perfusion will increase.

The surface of the villi in the small intestine is covered by a single layer of epithelial cells called enterocytes. Enterocytes absorb nutrients from the intestinal lumen as they move up the side of the villus. The enterocytes are shed from the end of the villus through apoptosis after 3 to 4 days. Consequently, new cells must be continuously supplied from the crypt and move up the villus. When a stem cell in the crypt divides, what are its immediate daughter cells

Answers

Answer:

either a stem cell or a specialized cell, such as an enterocyte

Suppose a goat has a homozygous dominant individual (AA) is crossed with an individual
that is heterozygous for the same trait (Aa). What are the possible genotypes of the offspring, and what percentage of the offspring is likely to show the dominant phenotype?

Answers

Answer:

100%

Explanation:

I found this answer by using a Punnet square.

Other Questions
Which economic activities are affected by climate change? A. Agriculture B. FarmingC. Building D. All of the above identify the literary device: the shores are empires find the volume, help please all numbers are in inches, will mark brainleist Giving brainliest for CORRECT awnser. 20 POINTSThere were eleven states in the ______1.Union2.Confederacy According to White, with the Roe v. Wade decision, theSupreme Court has Starting today, many restrictions are being lifted. Is the pandemic over? Explain. Solve for x.-30 = 5(x+1) Science Work, Help Please!1. A. What is diffusion?1. B. Use diffusion toexplain what happens when you drop asugar cube into a mug of hot tea.2. A. What is osmosis?2. B. Describe how water moleculesmove through the cell membrane duringosmosis. Suppose that y varies inversely with x. Given x=-3 when y=-105. Find y when x=15 Problem Statement: Air flows at a rate of 0.1 kg/s through a device as shown below. The pressure and temperature of the air at location 1 are 0.2 MPa and 800 K and at location 2 the pressure and temperature are 0.75 MPa and 700 K. The surroundings are at 300 K and the surface temperature of the device is 1000 K. Determine the rate that the device performs work on its surroundings if the rate of heat transfer from the surface of the device to the environment is 1 kW. Justify your answer. Note that the flow direction for the air is not specified so you need to consider all possibilities for the direction of the airflow. Assume that the air is an ideal gas, that R The author establishes the important role that community colleges play in improvingopportunities for less privileged Americans by providingA. facts and statistics related to this group of studentsB. anecdotes about the lives of this group of studentsC. an interview with President ObamaD. an example of a successful accelerated study program Which of these is an effective color scheme? a) red text on red background b) red text on black background c) yellow text on black background d) yellow text on white background my english hw is getting difficult! A man wants to enter an exclusive club, but he doesn't know the password. Another man walks to the door and the doorman says 12, the man says 6, and is let in. Another man walks up and the doorman says 6, the man says 3, and is let in. Thinking he had heard enough, he walks up to the door and the doorman says 10, he says 5, and he isn't let in. What should he have said? answer this question 2. The length of time you take to execute anaction is called your *blank*time.(a) total stopping (c) braking(b) perception(d) reaction b) Sanjit reads 3 books in 1 week.Express as a unit rate and explain Find the middle term of the expansion of (x+y)^8 a40x^2y^2 b70x^2y^2 "I recollected my threat (to Frankenstein), and resolved thatit should be accomplished. I knew that I was preparing formyself a deadly torture, but I was the slave, not the master,of an impulse which I detested, yet could not disobey,"Which theme does this passage best represent?A. The possibility of losing one's humanity to scienceB. The destructive power of revengeC. The joy that comes from scientific discoveryO D. The wanger of seeking personal glory Which shows the pre-image of triangle X'Y'Z' before the figure was rotated 90 about the origin?On a coordinate plane, a triangle has points X prime (negative 2, 2), Y prime (0, 6), Z prime (1, 1).On a coordinate plane, a triangle has points X (2, negative 2), Y (6, 0), Z (1, 1).On a coordinate plane, a triangle has points X (2, 2), Y (6, 0), and Z (1, negative 1).On a coordinate plane, a triangle has points X (negative 2, negative 2), Y (6, 0), Z (negative 1, 1).On a coordinate plane, a triangle has points X (negative 2, 2), Y (negative 6, 0), Z (negative 1, negative 1).