Answer:
A
Explanation:
The sun is what drives most processes, the sun gives energy to the plants which help them grow resulting in creatures consuming the plants. The sun is the major source so remeber that! :D
I am sure this is the answer so I hope this helps you!
<span>I believe the answer is this:
A free-diving vessel used to explore the ocean at great depths.
Hope this helps.</span>
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.
Answer:
Organ
Explanation:
Cell, tissue, organ, organ system, organism
