Answer: Chemical pollution. ...Groundwater pollution. ...Microbiological pollution. ...Nutrient pollution. ...Oxygen-depletion pollution. ...Surface water pollution.
Explanation: hope it helps you .
Answer:
Organisms with heritable (genetically determined) features that help them survive and reproduce in a particular environment tend to leave more offspring than their peers. If this continues over generations, the heritable features that aid survival and reproduction will become more and more common in the population.
I know they will use contrast media for things like MRIs and CT scans to inhance the tests.
it is a test where you can look in books, the internet, and several other places to find the answers.