Where in the animal cell food is converted into energy?

Glucose is a form of sugar found in the blood cells use glucose as a source of energy, but too much or too little can cause serious health issues so, the body uses the hormone insulin to regulate glucose n the blood insulin maintain glucose levels in the blood if blood glucose lovels got very high, what would you expect to see happen to insulin levels?

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

Explain why ecosystem diversity results in species diversity in a healthy biosphere