You notice that over the past month, many students have started carrying a new style of backpack. you think to yourself, "maybe the bookstore recently started selling this new style of backpack." the statement in quotation marks is

the given statement is an example of hypothesis.

Explanation

the given statement is an example of hypothesis.

A hypothesis is a prediction, an idea suggested in the sake of statement so that it can be examined to see if it could be true.

In scientific field, the hypothesis is drawn prior to any research, part from fundamental background analysis,

Usually a hypothesis is temporary ; it is an assumption or proposal created purely for the purpose of being tested

explanation:

allergens: overstimulate the nerve system

neurotics: attack nerve cells

mutagens: damage or otherwise alter dna sequence

generators: cause defects during growth and development  

carcinogens: cause unchecked cell growth

i hope you get the idea according to me these are the effects that happened.