Please help!! the sooner the better

b. convert water into carbon dioxide

Explanation:

I'm sorry if this is wrong I learned this last year I hope it helps!

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:

the answer would be   10%