Due to it's great size, China is a land of contrast.
Double Helix is the three-dimensional structure of DNA
The Mediterranean Sea [D] was dominated by Phoenician Trade.
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.
