Water is an important resource, its use in dams, thermoelectric power and hydroelectric power would be considered .

50% lit on the left side

yes, because even though a theory has a  lot of evidence to support it, it is not always true

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).