By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other. Often we can work out how and where they lived, and use this information to find out about ancient environments.
No, polar bears does not migrate.
<span><span>Polar Easterlies
</span><span>Prevailing Westerlies (aka Westerlies).
</span><span>
Tropical Easterlies (aka Trade Winds).
</span></span>
It all depends on the trait. If the dominant is more common that the recessive trait then it is more likely to a dominant trait in the gene pool. But if the recessive trait is more common in the gene pool then you will have a recessive trait. Does this make sense? Let me know if I'm right!
DNA is being used as a template to make a molecule of mRNA.
