Answer:b) The air at high altitudes are less dense, so its harder to breathe.
Explanation:
AS altitude increases, the air pressure drops. This reduces the amount of gas molecules in the air so the air becomes less dense compared to air closer to sea level.
Answer:
a thick layer of fat
Explanation:
because weather is temperate, animals need a fat layer 2 keep warm, if there is no food available, it's fat layer essentially gives it energy when food is scarce, or hibernation occurs...
Answer:
In primary succession there is no presence of soil or the soil cannot support life in secondary succession there is a presence of soil in which it can support life
Explanation:
Answer::::::::::::::::::::C
Answer:
the answer would be D deep ocean to trench.
Explanation:
because trenches are the deepest part of the ocean and the deeper you go the higher the pressure