Which of the following resources can be considered renewable?
question 6 options:

natural gas

quartz

uranium

wood

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

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: