Respuesta :

I can answer the third one:

Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle (light-independent reactions).
The sun produces energy through nuclear fusion. That energy goes to earth and the plants use photo-synthesis to create food from that energy. Herbivores like pigs and cows eat those plants for that energy. Then carnivores like wolves and humans eat them for energy. it happens everyday allday