Answer:
B
Explanation:
Mass is constant. Weight varies due to gravity.
For example, On earth you weigh 75kg but on Jupiter you weigh 275kg (not accurate). Your weight has varied. However your mass is the same on both planets.
Are you sure these are the only answer choices? I believe the answer would be Hippocampus, but it's not up there.
Answer:
The hemoglobin molecule has four binding sites for oxygen molecules: the iron atoms in the four heme groups. Thus, each Hb tetramer can bind four oxygen molecules.
Explanation:
It happens when the moon is in the earth's shadow
And sun moon and earth is completely aligned
Answer:
b
Explanation:
the rain is likely in the in the next few minutes