Answer:
<em><u>#1 and #2</u></em>
Explanation:
The Crust is both the thinnest layer of the Earth's lithosphere as well as the outermost layer of the lithosphere.
Due to decreased light penetration, B. THE MOUTH of the rivers and streams will have less diversity of plant life.
The decreased light penetration is brought about by the murkiness of the water due to numerous deposits of sediments. Sediments that have been collected at the water travels towards the mouth of the rivers and streams causes the water to be muddy and murky making it impossible for light to penetrate.
The Correct choice is C
<u>Demography</u> is the study of human populations and how they grow or decline.
I think the correct answer would be Grow Cover Crops
I hope this helps !