What are the hip bones found in whales an example of

Use the drop-down menu to match the following definitions to the corresponding terms. the total variety of organisms that live in the biosphere a group of organisms that breed and produce offspring that can breed all of the biotic and abiotic factors in an area

How do you date a sample of rock that you suspect as being one of the earliest on earth

Polar zones are cold and tend to be dry because of a pressure system of cold. low high