What is Jared testing in this experiment? -how the products of anaerobic and aerobic respiration differ - the amount of respiration that occurs -the rate at which sugar dissolves -how the temperature of water affects photosynthesis

a compound light microscope is used to magnify objects in steps.  

hope it

bal is blood alcohol level. bac will normally be higher in a person with more body fat. so the answer to your question would be, as body fat decreases, the increasing rate of bal decreases.  

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).