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Trava [24]
2 years ago
10

9. This is the backbone of the DNA strand. 10: Dna is made out of

Biology
1 answer:
liberstina [14]2 years ago
3 0

Answer:

10. B I *think*

Explanation:

I remember reading this

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Suppose the femur bone of an animal has 1,000 atoms of carbon-14 when the animal dies. How many atoms of carbon 14 will be prese
shtirl [24]

Answer:

After 6000 years, approximately 500 atoms of carbon-14 will be left in the femur bone of an animal which had 1000 atoms of carbon-14 when the animal died.

Explanation:

The half-life of a radioactive isotope of an element is the time taken for half the atoms present in a given amount of the element to undergo decay or disintegration. For example, the half-life of carbon-14 isotope is 5730 years. This means that, if there are 100 atoms of carbon-14 present in a given sample of a material, in the next 5730 years, approximately, 50 atoms of carbon-14 will be left in the material.

Since the half-life of radioactive isotopes are constant, these radioactive isotopes are used in the determining the ages of ancient life-forms as well as rocks.

In the given example, after 6000 years, approximately 500 atoms of carbon-14 will be left in the femur bone of an animal which had 1000 atoms of carbon-14 when the animal died.

8 0
3 years ago
(GIVING BRAINLIEST!!!!)
Alika [10]

Answer:

windy, cold, long, constant(doesn't set), warmer

Explanation:

3 0
3 years ago
What are the structures and organelles of protozoans?
dangina [55]
The ciliates<span> have both a </span>micronucleus<span> and </span>macronucleus<span>, which appear quite homogeneous in composition. The organelles of protozoa have functions similar to the organs of higher animals. The </span>plasma membrane<span> enclosing the </span>cytoplasm<span> also covers the projecting locomotory structures such as </span>pseudopodia<span>, </span>cilia<span>, and </span>flagella<span>.

</span>
5 0
2 years ago
In the food web picture, squirrels would be classified as ? is it
professor190 [17]

Answer:

Omnivore

Explanation:

Squirrels mainly eat fungi, seeds, nuts and fruits, but they will also munch on eggs, small insects, caterpillars, small animals and even young snakes.

6 0
2 years ago
As water moves from the roots up through the stem of a plant adhesion is a property of water that enables this to happens. which
goldfiish [28.3K]
The answer is hydrogen bonding, so D
4 0
2 years ago
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