Osh finds that there definitely is a relationship between enzyme action and temperature and graphs his results. the enzyme functions as a biological catalyst and has its optimum effectiveness at a) 30 degrees. b) 39 degrees. c) 59 degrees. d) 60 degrees.

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.

the tricuspid valve is present between right atrium and right ventricle

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).