A tomato plant in a greenhouse was found to be infected with tobacco mosaic virus. A few weeks
later, nearby plants were also found to be infected
with the virus.
Which of the following best describes how the
virus reproduced?
A The virus made its own spores.
B The virus produced seeds in the tomatoes.
C The virus used the host plant's resources and
machinery to reproduce.
D The virus immediately killed the host plant and
was free to reproduce.

C. The virus used the host plant's resources and

machinery to reproduce.

Explanation:

complete the square on the right side of the equation;

-5(x + 0)^2 + 15

answer: d. y = -x^2 + 15

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.