Eutrophication is caused by
a. an increase in nutrients
b. a decrease in nutrients
c. the introduction of new species of animals
d. the introduction of new species of plants
which of the following is a way that humans impact rivers and streams?
a. pollution
b. dams
c. flooding
d. all of the above

1. A, an increase in nutrients
2. D, all of the above

You can literally find this on google of each science career and search up what type of training you need and how many years in school

People who utilizes the progression principle will ensure their exercise program increases in frequency, intensity, time, and type. the changes need to happen gradually in order to ensure they make gains in their fitness program. a person who doesn't utilize the progression principle can still gain health benefits from exercising, but will not continue to improve in cardiovascular fitness.