um, no. False. Cheetah's came from desert cats not sabre tooth tigers
I believe it’s the fact that it’s a semi permeable membrane.
The controlled variable is what stays the same . So it’s C . They are given different amounts but the same food.
Answer:
I mean we humans give oxygen and get carbon
Explanation: carbon can have a lot of effect on life, we like cutting down tress, it have a lot of effect on our ecosystem because we are slowly destroying carbon dioxide to be no more.