Question

1. from the image provided, which organism would have the highest concentration of toxins?

a. water
b. human
c. fish eating fish
d. algae

1. dichlorodiphenyltrichloroethane (ddt) is an insecticide used in agriculture. it persists in the environment, accumulates in fatty tissues, and can cause adverse health effects on wildlife. based on the diagram, which of the following best describes the impact of ddt on the osprey population?

a. a decrease in ddt will result in a weaker eggshell, resulting in a decrease of the population.
b. a increase in ddt will result in a weaker eggshell, resulting in a increase of the population.
c. a decrease in ddt will result in stronger eggshells resulting in a increase of the population.
d. a increase in ddt will result in stronger eggshells resulting in a decrease of the population.

1. the florida department of environmental protection and the florida department of health ensure that drinking water from public water systems meets water quality standards for lead (pb) and copper (cu). public water systems are required to perform routine water quality testing to ensure that the water they are providing their customers meets state and federal standards. which monitoring parameters would be used to test for water quality?

a. ph
b. wind speed
c. conductivity
d. air quality
e. atmospheric pressure
importance of monitoring parameters
. to manage and minimize the impact of human activities on an environment (preventative)

Explanation:

1. Biomagnification causes toxins to accumulate at higher levels in organisms at higher trophic levels. Humans are at the top of the food - chain among the given options, so they would have the highest concentration of toxins.
2. DDT weakens osprey eggshells. As DDT levels decrease, eggshells become stronger, which allows for a higher survival rate of osprey offspring, increasing the population.
3. pH and conductivity are important parameters for testing water quality as they can indicate the presence of various substances and the overall chemical state of the water. Wind speed, air quality, and atmospheric pressure are not directly related to water quality testing for lead and copper.

Answer:

1. b. Human
2. c. A decrease in DDT will result in stronger eggshells resulting in an increase of the population.
3. a. pH, c. Conductivity