I think it's D, end of summer
Because there are 2 equinoxes, 1 later in the spring and 1 around the middle of autumn. Which means I don't think it's A, B, or C. But it is around the end of summer. That's what I think the answer is. But, summer ends when autumn starts so... it could be B.
Hope this helps a little.
Answer:
Conditions at the base of a glacier increase glacial flow velocity -
Steeper slope
Smooth rock / glacier contact
Colder basal water temperature.
Explanation:
Steeper slope and smooth rock/glacier contact will increase glacial flow velocity because higher the steepness higher the velocity and smoothness will apply less friction.
Due to decrease in ice thickness the load at the bottom of the glacier will decrease, and we know that the glacier flows under the load of itself, so lesser the load lesser the velocity.
Colder basal water temperature will generate less amount of melt as compared to warmer basal water temperature, so in colder condition, glacial flow velocity will not be increased.
