[GT.03]A majority of scientists worldwide agree with a new theory of evolution proposed by a group of students. The theory will most likely be rejected. accepted. non-testable. non-observable.

a: the sheep and waste material both release carbon into the atmosphere.

the dark variety, as they are not visible on the dark tree barks

explanation:

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).