essential amino acids.
the "essential" refers to it being necessary to derive them from the foods we eat, but in fact the amino acids that the body produces are just as essential to the proper functioning and health of our bodies.
4 because the distance is 40 and it hit the ground in 5 seconds
Answer:
I think the answer would be D,I'm not really sure though,hope I'm right,sorry if I,m not :)
Explanation:
You could have made sure the books were the same weight and your friends could have done it at the same time as you
