Oxygen in the lungs leaves the air sacs and enters the blood veins capillaries

Ineed a chemical reaction takes place in which erlergy is released. arrange the reaction's characteristics in order from start to finis lower energy of reactants higher energy of products higher energy of reactants transition state sd lower energy of products

Why is it incorrect to say that mitochondria function only as energy factories with cell

When fossil fuels are burned, carbon dioxide is released. how does this gas impact the environment?