First one is A
Second one is B
Hope this helps !
D because to help preserve environment everyone has to work together
It would be D because would be small and you wouldn't feel it. For answer A, the scientist could feel it. For answer B, you can kind of feel it or feel it. For C, It can definitely feel it. So the answer would be d.
It can either increase the stress level OR it can lower self esteem and inhibitions .
Energy derived from food is used to create ATP, an energy-rich compound