Can someone help me ?

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 is the correct formula for photosynthesis

Which of these internal feedback reactions does not need your brain? oa. your leg jumping when it is hit by a reflex hammer b. your deeper breathing when you need more oxygen c. your body temperature rising when you have an infection d. your heart beating faster when you are in danger