Which of the following statements is true? a. Matter and energy cannot be created or destroyed.
b. Matter can be created or destroyed, but energy cannot be created or destroyed.
c. Matter and energy can be created or destroyed.
d. Energy can be created or destroyed, but matter cannot be created or destroyed.

stress fractures occur largely in the feet and legs and are common in sports that require repetitive impact, primarily running/jumping sports such as gymnastics or track and field.

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: