From what I can understand from this, plants go toward the sun b/c it wants more sunlight. This is apparent when you just let a tiny piece of sunlight to the plant. The plant will grow toward the sunlight so that it can get more.
Answer:
The extinction of a large number of species within a relatively short period of geological time.
I would say C if thats not right then its problable D
Liquids are measured by liters.
solids are measured by cubic units.