B. Sunlight doesn't reach the bottom of lakes..
natural selection, bc it is the process whereby organisms better adapted to their environment tend to survive and produce more offspring
B, C, D, B
I hope these are right, hope this helped.
Answer: Characteristics: The fins are supported by rays, as the name indicates. In contrast to the cartilaginous fish they have a rigid skeleton. The swim bladder is also a unique feature of most ray-finned fish, enabling them to maintain buoyancy as they move up or down in the water.
Answer:As carbon dioxide and other greenhouse gases heat up the planet, more water evaporates into the atmosphere, which in turn raises the temperature further.
