Which of the following is a risk of
being underweight?
a. starting to develop arthritis
b. increased possibility of stroke
c. poorly functioning immune system
d. becoming more susceptible to heart disease

C. Poorly functioning immune system

Explanation:

Being underweight would basically mean that you aren't receiving enough nutrition for your body, causing your immune system to weaken from it.

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: