Where do the energy storage molecules in an ecosystem come from? (the topic is "sunlight and life". i'm thinking photosynthesis but i don't know for sure.

Consider the last statement in the prompt: "people take such environmental factors into account in their choices when deciding where to live." do all people have a choice as to where they live? what factor plays a key role in this decision and may therefore play a large role in determining quality of life?

What substance acts to prevent sudden ph changes in bodily fluids?

Do plant cells perform cellular respiration?