Will mark brainlist and give 50 points Project: Scale Model of the Solar System
INSTRUCTIONS:
Create a scale model of the solar system to show the relative sizes of the Sun and the planets.

the answer to your question is tooth decay.

ask your friends for what they got then copy it down if you don't have any friends which is fine than google it or pay the teacher

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).