Most rivers have relatively gentle gradients in the headwaters and steep gradients in their downstream portions.
true / false.

False

Explanation:

Most rivers don't have gentle gradients in the upper course or headwaters, rather most rivers always have steep gradient in their upper course. The upper course of a river is known as the headwaters region. But in their downstream regions, most rivers usually have relatively gentle gradients.

answer; seasons change because earth tilts on its axis; and the angle of the tilt causes the northern and southern hemisphere to trade places throughout the year;

primary groups shape your individual development

explanation: