PLEASE ANSWER QUICKLY!! (science)))

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

Identify the composition of oceanic and continental crystal rocks.in a model of earth’s interior,where would these rocks appear?

9. the history of life on earth is recorded in