Answer:
Looking for light
Explanation:
Since plants require sunlight in order to produce light, they need to be exposed to it. Now, since there are other plants attempting to do the same they have to grow higher so they don't get put in the others shadow and possibly die due to lack of sunlight.
Pesticides, they were feeding off they plants
The student is likely engaging or forming a hypothesis in which a hypothesis is a scientific method of having to formulate an intelligent or educated guess that may be an answer as to how a problem has occurred in which the student thinks that the racoon may live longer if it only eats vegetables.