The number one factor for determining what living things can survive in a body of water is

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

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million

Identify the structures ! 20 points