Question

question 19
which of the following describes a scenario involving pesticide drift?
pesticides run off into a local waterway that flows into a nearby fishing lake, killing some of the sensitive species of fish that live in the lake.
pesticides used in a mountain valley are carried by air currents into the surrounding hills, killing amphibians living in the hills streams.
pesticides are copied by companies producing generic varieties, but the generic varieties have greater toxic effects than the original pesticides.
pesticides leach into groundwater aquifers, sickening those who use the aquifers for drinking water.
pesticides contain carcinogens that cause cancer in the workers using the chemicals.

question 20
the bald eagle, osprey, and peregrine falcon all are
u.s. invasive species
found only in florida
overhunted for their feathers
extinct
top consumers susceptible to eggshell damage caused by ddt

Explanation:

Question 19

Pesticide drift refers to the movement of pesticides through the air. When pesticides in a mountain valley are carried by air currents into surrounding hills, this is an example of pesticide drift. The other options involve runoff (water - based movement), groundwater contamination (leaching), and chemical - related health issues (carcinogens) rather than air - borne movement.

The bald eagle, osprey, and peregrine falcon are top consumers in their ecosystems. DDT (a pesticide) caused eggshell thinning in these birds. They were not invasive species. While they may have been overhunted to some extent, the more significant issue related to their decline was DDT - induced eggshell damage. They were not extinct.

Answer:

Pesticides found only in Florida in a mountain valley are carried by air currents into the surrounding hills, killing amphibians living in the hills' streams.

Question 20