For this case we have that by definition, a linear function is of the form 
If we have that a and b are linear functions, then they are of the form:
If we multiply them we have: (Applying distributive property)
That is, we get a quadratic function.
Answer:
I'm pretty certain that it's a or b. C and D would be something that a surgean would wonder. Although, im most certain that it's B. Scientists are always asking how or about the causes of something
This is true.
Investing is putting your money in an asset that will generate income, which is what the first sentence more or less say.
Investment options do include stocks, bonds, and mutual funds. Generally, higher risks include a high potential for returns.
C. Reduces eutrophication.
Tertiary treatment is the last process done to waste water before realising it in to the enviroment or use it, eutrophication is an exces of minerals and inorganics compuonds in water.
The Sumerian religion was majorly practices by the people of Sumer. The sumers were the first literate civilization of Mesopotamia. They had a strong belief that the universe that had been formed is due to a series of cosmic births. Their deities included Enlil, Utu, Enki etc.
Whereas the Mayans believed in several aspects of rituals, astronomy and nature. They were known for their religious calendars. Their deities mainly were nature Gods like the Sun , Moon, Corn/Maize, Rains, etc.
