In 2010, an oil well in the Gulf of Mexico spilled millions of barrels of oil into the ocean. Is this an example of a point source or nonpoint source pollution?

non-point source

Explanation:

This was a non-point source of pollution because this was not directed at a certain area or ocean. The oil was accidentally dropped into the ocean. It was not intentionally dropped by the oil well. The answer to the question is non-point source pollution.

hormones in blood stream

image: dtc.ucsf.edu

endocrine glands secrete hormones into the blood stream near them; the hormones then travel in our bloodstream until it reaches its destination, called a target cell, in distance parts of the body. in the target tissue, hormones lock onto the target’s plasma membrane, called the receptor site.

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: