In an ecosystem, which is not a density-
dependent limiting factor?
a) predation
b) parasitism
c) competition
d) natural disaster

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

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:

c. is the correct answer