Why is it advantageous to have ventilators in the houses at the top of the walls for class 7

answer; i believe the correct answer to the above question is ( friction)

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.

golgi body just took the test on edge

answeramino acids;