Which of the following is not an example of a mutagen? 1. X-ray
2. Cosmic rays
3. Shadow blow with a fist
4. Pesticides

the correct answer is 4) heat and pressure

metamorphic rocks arise from transformation of existing rocks types, in a process called metamorphism. during metamorphism the original rock(prolith) change into metamorphic rock by heating (150-200c) and pressure of more than 1000 bar. the original rock can be sedimentary, igneous, or existing metamorphic rock.

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation:

i wish i could with all of them i can barley see the first one so here's the answer to the first one b

on island x the species needed to adapt because they were being subject to predators which didn't inhabit island y.