Eutrophication occurs when excess nutrients are supplied to a region, leading to an algae bloom and ultimately A. coral bleaching.
B. ocean deoxygenation.
C. overfishing.
D. ocean acidification

mountains can affect the climate of nearby lands. in some areas, mountains block rain, so that one side of a mountain range may be rainy and the other side may be a desert. much of airborne moisture falls as rain on the windward side of mountains.

explanation:

answer: blah

explanation:

bc blah

the last one: artificial selection/genetic engineering

plant breeding is modifying the genetic composition of the plant - but this isn't cloning (which is specifically introducing a gene into a genome). but you are artificially selecting for the phenotype that you want.

the second one is literally genetic engineering - the gene would have been cloned first and then inserted or genetically engineered into the new plant cell (the cotton).