This may not be biology, but it seems like it should!
what conversation effort to conserve trees?

a. driving a hybrid car

b. recycling newspapers

c. reusing tin cans

d. melting down glass bottles

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 is b.

hope it