ANSWER:
Moisture is the reason the growth of plants in highlands is limited to low shrubs and grasses.
Step-by-step explanation:
- The vegetation in the areas of highlands is very little. As the altitude increase, the pressure, temperature, and atmospheric humidity also decrease.
- Plants don’t grow too much in the highlands due to the harsh conditions.
- Only the small plants and shrubs that can survive in a less humid environment can grow in Highland areas.
- Along with these small plants, tree lines grow where the trees are able to survive and it varies according to different highlands.