Jose wants to measure his fingernail, what unit is he going to use?​

millimeters

Measure the width of the fingernail on your little finger. This is probably less than 1 centimeter so you will need to count the millimeters.

you can measure in metric

Explanation:

here is a file

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).