Answer:
higher altitudes have a lower level of oxygen which in turn, trains your lungs to hold and breathe more oxygen which also helps you cycle, run, etc. longer than usual
Explanation:
Depending and what kind of whale, yes
The answer is XX.
X is a female, XX is a female, Y is a male, XY is a female
Answer:
waste of other animals,eating dead animals and plants
organisms are always in competition for resources such as food and water or simply just for space.
