<span>If I were attempting to date a rock sample that I suspect to be incredibly old, i would use radioactive isotopes with a long half life. When dating rocks and fossils to discover approximately how old they are, radioisotope dating is used on igneous rocks found near fossils. Things like Uranium 235, which is an unstable radioactive isotope of elements, decays at a constant rate over time so can be useful in determining age.</span>
Answer: Rising Sea Levels
Explanation:
I agree with the person above - reproductive cells or sex cells are called gametes.
When it comes to women, these gametes are called an ovum, or an egg, and when it comes to men, gametes are called sperm.
The theory of spontaneous generation
a. 25%
b.75%
c. 50%
d. Male cats have only one X chromosome in their DNA meaning that they should be unable to inherit different colours.