Mosses grow close to the ground because they
a. lack the nutrients needed to grow tall.
b. lack vascular tissue.
c. need direct sunlight.
d. do not perform photosynthesis.

The best answer is B.

Mosses grow close to the ground because they have no vascular tissue or system. A vascular system in plants can simply be described as a series of tubes that can transport water and nutrients over a distance from one part of the plant to another. Because of this, mosses unlike other plants such as trees  must be close to the water source on the ground to be able to take up water and nutrients.

Trees have a vascular system which enables them to transport water and nutrients over a large distance and can thus afford to grow tall sometimes over 100 ft  tall like the redwood and sequoia trees.

just go with your heart buddy

if the hares very faster than they are now, and thus the lynx's hunting success rate drops because it will be harder to catch them, the rate that will change will be the pray-rate. the pray-rate will change because more hares will be able to survive, thus more individuals for reproduction, so the end result will be increasing population of hares.

the predator-rate will remain pretty much the same because there will be more than enough pray, but the hunting success rate is stagnant.