What is an important trait or skill for a scientist to have?

1)avoidance of bias
2)using personal bias
3)using personal prejudice
4)manipulating results to fit a hypothesis

climate change and pollution

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).