I think is c d b a b but I'm not sure
In the process of photosynthesis, the outcome or product is oxygen. In cellular respiration, oxygen is taken in to fuel the cells. Cellular respiration is the correct answer.
I hope this helps!
Answer:
Facilitated diffusion takes place due to a difference in concentration on both sides of the membrane, in the direction of the lowest concentration, and does not require energy.
I would say 4. To create a hypothesis, you would need some knowledge about what you're studying. This is where prior knowledge could come in handy.