Answer:
C-14 can be used for dating fossils (50,000-70,000 years)
Explanation:
A fossil is a preserved remains of a once-living organism from a past geological age. Moreover, radioactive decay is a natural process by which an unstable atomic nucleus loses energy by emitting radiation. C-14 (Carbon 14) is a radioactive isotope of carbon that emits radiation which is widely used for dating fossils. C14 decays into the stable isotope C 12 and this radioactive isotope (C-14) has a half-life of 5730 yrs, thereby it is possible to use this rate of decay in order to calculate the age of an object according to the proportion of C14 remaining. The short half-life of C-14 indicates that this radioactive isotope cannot be used to date extremely old fossils (after 50,000-70,000 years, the C-14 dating method is no longer valuable for estimating the age).
Required
Which of the following is true of the Carbon Cycle *
5 points
New Carbon is created
Old Carbon is destroyed
The same Carbon moves from one sphere to another throughout time.
Carbon stays in the same place until humans move it or use it.
Answer:
it will be third no. that is The same carbon moves from one sphere to another throughout the same time
que es el arte rupestre
Answer:
Explanation:
El arte rupestre es todo aquel dibujo o expresión artística prehistóricas que se hallan impresas en rocas y cavernas, ya que el hombre de este tiempo plasmaba allí su arte y desarrollaba gran parte de su vida en estas cuevas para refugiarse de depredadores y de las inclemencias climáticas.
tRNA is involved in?
A. carrying amino acids
B. carrying glucose molecules
C. carrying ribosomes
D. carrying nucleotides
Answer:
carrying aminio acid
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Bacteria are formed by
Meiosis
Mitosis
Binary fission
Multiple fission
The picture shows a carafe of olive oil.
What is one of the primary functions of this food in the body?
a.) building proteins
b.) storing energy
c.) providing structure to cell walls
d.) carrying genetic information
Answer:
it builds protein and stores energy
In a prokaryotic cell, most ribosomes are
Answer:
They are roughly 40 percent protein and 60 percent rRNA.
Explanation:
I hope this helped:)
suppose a particular in an area eats rabbits. if hunters kill off all of the those predators, the rabbit population will increase, resulting in more______ among the rabbits for food and space?
A. competition
B. extinction
C. symbiosis
D. cooperation
A. competition
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Forest fires can cause a secondary disturbance in an ecosystem what is a secondary disturbance
Answer:
A progressive series of changes that take place in an area where a
community is living.
Explanation:
Answer:
important to remember that the so called “secondary” disturbance is secondary only because it occurs second sequentially.
Explanation:
hope it helps
Match the information given with the correct stage of labor: 1st (dilation), 2nd (expulsion), or 3rd (placental).
1. Stage that has the onset of regular uterine contractions and dilation of the cervix___.
2. Stage in which the cervix dilates to a diameter of about 10 cm____.
3. The stage which commonly lasts 8-24 hours____.
4. The stage in which the amniotic sac ruptures____.
5. The stage in which the baby exits the vagina_____.
6. The stage which commonly lasts from a few minutes to an hour____.
7. The stage in which contraction of the woman's abdominal muscles assists the uterine contractions_____.
8. The stage in which the placenta is expelled from the uterus_____.
Answer:
The correct answer is -
1) 1st stage
2) 1st stage
3) 1st stage
4) 1st stage
5) 2nd stage
6) 2nd stage
7) 2nd stage
8) 3rd stage.
Explanation:
Labor has three different stages 1st (dilation), 2nd (expulsion), or 3rd (placental).
Stage 1st: It is the stage that starts with dilation of the opening of the cervix to 10 cm and contraction of the uterus.
Stage 2: in this stage fetus head moves to the cervix and gets into the birth canal of the mother.
stage 3. The placenta and umbilical cord expel from the mother and this is cut after the delivery.
Which event is most likely to lead to a heat wave?
A. A high-pressure system lingering over an area
B. A warm, moist air mass moving over a cooler air mass
C. An extremely low-pressure system moving into an area
D. A high-pressure system colliding with a low-pressure system
SUBMIT
Answer:
The correct answer is - A. A high-pressure system lingering over an area.
Explanation:
A heatwave is a period of hot weather that is not normal in the region that can last for two or more days. Heatwaves only take place in case of a temperature increase above the average for a particular area in history.
When air trapped in a particular area due to a high-pressure system. The trapped are leads to an increase in the temperature due to sunlight which leads to the heatwave.
Plants such as Venus fly trap and the Sindhu attract and consume in six these plants are able to produce substance which breakdowns in six into compounds that are usable by plants one element obtain from these compounds is nitrogen the chemical compounds that break down the insects are most likely
Answer:stomach acids i presume such as Gastric acid, or what most people call stomach acid, is vital in the proper breaking down of your food. It's composed of multiple compounds and enzymes, which form the fiery cocktail of hydrochloric acid (HCI), potassium chloride and sodium chloride.
Explanation:
Pilots use a simulation to learn to fly a plane. The simulation shows how
adjusting the controls on a plane under different atmospheric conditions
affects the flight. What type of model is this simulation?
O A. A computer model
B. A conceptual model
C. A mathematical model
O D. A physical model
Answer:
The correct answer is - A. A computer model.
Explanation:
Pilots use flight simulations for their training, airlines heavily depend and rely on the training at computer simulators (fixed base simulators). These simulators are based on Artificial intelligence to stimulate real-like virtual conditions with 3D geographical locations and many other components such as cockpit controls and how to use the cockpit displays to control the airplane.
Thus, the correct answer is - A. A computer model.
2. Give one possible reason why the population decreased in 1990 after it had reached its
carrying capacity
1 I
Answer: The population exceeded its carrying capacity because there were more resources available so many deer reproduced and the population quickly exceeded the carrying capacity.
Explanation:
When the population size exceeds the carrying capacity, the population must decrease. One possible reason is the lack of available resources to support this population size.
What is Carrying Capacity?
A growing population that inhabits a limited space is gradually affected by density, rebounding in the multiplication rate.
The population growth per capita rate decreases as population size increases.
The population reaches a maximum point delimited by available resources, such as food or space. This point is known as the carrying capacity, K.
Carrying capacity refers to the maximum point at which the environment can support a growing population.
K is a constant. It coincides with the population size when natality rate and mortality rate are equal to each other. This is the equilibrium point.
If the population size, N, is inferior to K ⇒ the population still grow. When N approximates to K ⇒ the population's growth speed decreases. When N=K ⇒ the population reaches equilibrium, When N is superior to K (N>K) ⇒ the population must decrease in size because there are not enough resources to maintain that size.So when the population size exceeds K, carrying capacity makes the population decrease in size. This is because there are not enough resources for this population to survive.
Probably this population's size exceeded the carrying capacity because there were available resources and animals were not predated by any other species. So this population kept growing until they exceeded the carrying capacity level.
Once they did it, the environment could not support this population size, probably because of the lack of available resources, so the population had to decrease in size. Mortality rate must have increased while natality rate must have decreased.
One possible reason is the lack of available resources to sopport this population size.
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What part of he wave is labeled with an A.
Trough
Crest
Amplitude
Wavelength
please help, im in a really bad place rn and nobody ever helps. im about to fail the grade :( A train travels at a speed of 47mph and travels a distance of 323 miles. How long did it take the train to complete its journey
speed = distance ÷ time
we need time
time = distance ÷ speed
time = 323 ÷ 47
time = 6.8 hrs or 6hrs and 48 minutes
Which of the following is a disadvantage of geothermal energy?
A. It is a nonrenewable resource.
B. Collecting it damages the environment.
C. It produces greenhouse gases.
D. It is available near the Earth's surface in relatively few areas.
Answer: D
Explanation: it is “location specific” and is found near the earths crust in few areas
The disadvantage of geothermal energy is that it is available near the Earth's surface in relatively few areas.
What is geothermal energy?'Geo' means Earth and 'thermal' means heat."It is a type of renewable energy (present in the form of heat) taken from the Earth's core."The energy that are inexhaustible or get renewed at very fast pace is called renewable energy.The heat that remains in the interior part of Earth since the time of its formation and radioactive decay of materials is used to generate electricity.It does not damages the environment.It does not emit greenhouse gases. That's why it does not cause climate change.It is available near the Earth's surface and it is location specific i.e., it is located in relatively few areas.Hence, the correct option is: D. It is available near the Earth's surface in relatively few areas.
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Which is an example of a physical change?
A. Wood rots.
B. Water evaporates.
C .A nail rusts.
D. Gasoline ignites.
Answer: Water Evaporates
Explanation: When water changes from a liquid to a gas it isn't going under and chemical reaction it's just evaporating. But when Wood rots, A nail rusts, and gas ignites those are all undergoing a chemical change
sal'jdhkblajshdbjkadsbjadsds
Answer:
Huh?? what did you say?
Explanation:
Select all that apply.
Which of the following are not properties of lipids?
derived from fish, beans, milk, and eggs
held together by peptide bonds
made up of steroids and phospholipids
deep, long-term storage of energy
Answer:
b
Explanation:
because they are held together by ester bonds not peptide bond :)
which of the following observations led mandel to conclude that some traits were recessive?
Answer:
D
Explanation:
5. What is Virus ? Explain.
वाइरस क्या है ? समझाइए।
Answer:
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism.
The part of an enzyme that binds to the substrate is
The reaction center
The products
The active site
The inhibition cente
Answer:
active site
active site is the part of enzyme which binds to the substrate
The part of an enzyme that binds to the substrate is
[tex]\sf\purple{c.\:the \:active\: site}[/tex] ✅
The active site is a region on an enzyme where substrate molecules bind and undergo a chemical reaction.[tex]\bold{ \green{ \star{ \orange{Mystique35}}}}⋆[/tex]
a type of molecules that can absorb certain frequencies of light while reflecting other is called a?
I really need help on this one.
One example of an effector involved in regulating increased body temperature in a
person is the smooth muscle in peripheral blood vessels.
b. Explain how this effector brings about a decrease in body temperature.
Answer:
hh
Explanation:
ne example of an effector involved in regulating increased body temperature in a
person is the smooth muscle in peripheral blood vessels.
Evolution is best defined as
A. the changing of a population to simpler forms over time
B. process by which a population of organisms who are best adapted change over time
C. different populations adapting to the same environment
Answer:
B
Explanation:
process by which a population of organisms who are best adapted change over time is the answer
Neuvon Time to Recieve
Hand free phone
making a call tim (27 min)
Answer:
Okay... Ig
Explanation:
Why do all cells in the body need oxygen?
Answer:
For nutrition and energy
Explanation:
Oxygen has some chemicals that the body transfers into nutrition and energy. Without this your body would not be able to function properly. When we exhale (CO2) that was chemicals the body doesn't want or need.
Hope this helps
which of the following beat describes the producers in a terrestrial food web
Answer:
the photo?
Explanation:
the photo? there isnt a picture
explain how one of the earth’s natural processes is responsible for creating a natural resource.
Answer:
Natural processes are interactions among plants, animals, and the environment. These interactions, which include photosynthesis, pollination, decomposition, and others, help create and shape natural communities.
Explanation:
A natural resource is the winds, which are produced by the displacement of atmospheric air.
How are natural resources formed?Examples of renewable natural resources:
SunlightPlantsWindRenewable natural resources are those that are renewed in nature, existing in abundance. Typically, these resources do not run out easily due to the renewal time and their ease of renewal.
With this information, we can conclude that there are several types of natural resources, with different forms of formation.
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which of the following factors is not related to anoxygenic photosynthesis?
a)sunlight b) co2
c)bacteriochlorophyll d) release of o2
Answer:
The answer should be: d) release of o2
