Ineed i need to identify these images (i'm doing a chromosome worksheet) can someone me identifying them?

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

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

The equation shows cellular respiration. during cellular respiration, glucose combines with oxygen to form carbon dioxide, water, and atp. what happens to the energy in the bonds in glucose? the energy is transferred to oxygen. the energy is transferred to carbon dioxide. the energy is transferred to water. the energy is transferred to atp.