The answer is D. The crust.
We’re standing on the crust. This is the outermost layer.
True. At a steeper gradient the velocity of the river is greater, combined with more discharge in the river the ability of the river to transport load increases as it has more energy.
Answer:
How air masses changed the weather Weather can be changed or affected by many factors but air masses is most important factor to controls the weather. We can easily understand about weather changes from air masses by its name.Maritime air masses originate from the Ocean so it produce moist weather.
Explanation:
for what purpose or reason : why usually used with the other words of a question between what and for what did you do that for except when used