Capillaries.
<span>Exchange of oxygen and carbon dioxide in the lungs occurs between the capillaries and the alveoli.</span>
Answer:
the possible gametes are Aa,Aa,Aa,Aa
To release energy slowly in a step by step process
Answer:
l think it is the force of gravity
Explanation:
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Answer:
FALSE
Explanation:
But carbon-14 dating won't work on dinosaur bones. The half-life of carbon-14 is only 5,730 years, so carbon-14 dating is only effective on samples that are less than 50,000 years old. Dinosaur bones, on the other hand, are millions of years old -- some fossils are billions of years old. To determine the ages of these specimens, scientists need an isotope with a very long half-life. Some of the isotopes used for this purpose are uranium-238, uranium-235 and potassium-40, each of which has a half-life of more than a million years.
