Which of the following set of elements is among the vital elements to living things, as represented by the mnemonic "CHNOPS"?
A. hydrogen, phosphorus, sulfur
B. nitrogen, oxygen, sodium
C. carbon, potassium, sodium
D.
chromium, nickel, platinum
E
helium, osmium, selenium
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The movement of tectonic plates in two different locations is shown below: two blocks labeled location a and location b are shown. at location a the top layer of the block shows two horizontal arrows pointing towards each other. small dunes are shown in the middle between the two arrows. the block labeled b has a vertical line in the middle. on the left of the line there is an arrow pointing down. on the right of the vertical line there is an arrow pointing up which statement is most likely true? subduction may occur in both locations. earthquakes may occur in both locations. subduction may occur in location a only and a volcanic eruption may occur in location b only. an earthquake may occur in location a only and a volcanic eruption may occur in location b only.

Cedric has a low fever and minor aches. yesterday, he went to the doctor for his booster shot and receive the flu shot. which best explains why he has this reaction?

Eutrophication caused by human nutrient pollution.