You are digging a hole in you backyard when you see a a piece of fossilized bone in the dirt. how could you prove the age of the fossil? design a procedure for determining the relative and absolute age of the bone.

The large increase in atmospheric carbon dioxide in the last 50 years most likely comes from a. an increase in cellular respiration b. increased decomposition by bacteria c. an increase in the burning of fossil fuels d. an increase in photosynthesis

Why are some people more concerned about shark survival than about shark attacks?

The open ocean of any depth is called the