True or False: Matter on Earth is never lost. If an animal or plant dies, the matter in the animal or plant will be used over and over again.

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Which component in a graph indicates an independent factor? a. y-axis b. x-axis c. scale