High level tide pools are the most difficult for animals to live in.
Earth is closest to the sun at a point called perigee.
The point at which the Earth is farthest from the sun is called the apogee, just in case you needed to know that one too.
Answer:
The correct answer is C)
Explanation: The lake with no Sphagnum mat has less disolved oxygen. The moss is a plant which generates and liberates oxygen as part of its metabolism. The oxygen disolves into the whater of the lake which has this Sphagnum mat, giving it a higher concentration of disolved oxygen than the other one.
