Author Question: Over three years, 24 people living in a new subdivision develop respiratory infections and skin ... (Read 52 times)

@Brianna17 · **on:** Jul 16, 2018

Over three years, 24 people living in a new subdivision develop respiratory infections and skin rashes. People living nearby in a subdivision built 30 years previously show no signs of such disease.

Suspicions arise about possible molds or vapors that are associated with imported building materials in these new homes. To investigate the possibility that the new homes are causing the disease, the neighborhood association in the new subdivision decides to hire A) a herpetologist.
B) respiratory therapist.
C) a virologist.
D) a toxicologist.

Question 2

When cultivars require adaptations not currently in their genetics, plant breeders

A) may treat the seeds with chemicals that cause mutations in order to try to generate new forms.
B) often introduce traits found in wild varieties of the plant.
C) may try to introduce genetic traits found in pests of the crops.
D) use fertilizers to change the chemistry of the crops.