Drastic changes in environmental conditions can sometimes cause drastic changes to the gene pool of the population.
Photosynthesis takes place inside plant cells in small things called chloroplast.
In predation, one population is the resource of the other. One can conceptualize competition as occurring horizontally on the same resource level. While predation takes place vertically between different resource levels. Competition and predation comprise environmental pressures on the interacting populations.
D. All of its wavelengths are harmful
This is false, because a lot of electromagnetic radiation (such as visible light we see with our eyes) is not harmful.
A. is the correct answer bc a mutation changes the DNA.