C
The respiratory system removes the waste carbon dioxide produced from aerobic respiration in the body.
<span>blastocyst
The outer layers of the blastocyst turn in to the trophoblast after implantation. The trophoblast forms the placenta.</span>
Answer:
It is a cycle because oxaloacetic acid is the exact molecule needed to accept an acetyl-CoA molecule and start another turn of the cycle.
The tilt of the earth's axis, which essentially "turns" certain parts of earth so that some parts receive more direct sunlight
Answer:
deforestation is when an area of trees is cleared. reforestation is when a bunch of trees are planted and grown to revive what once was an area of trees.
