Which one of the following statements about population growth is the only true statement?
a. the size of a population can never exceed the carrying capacity.
b. if a population is at the carrying capacity of the environment, then the birth rate will more or less equal the death rate (i. e. zero population growth).
c. a population that is growing according to the exponential growth model will always end up going to extinction (i. e. dying out).
d. the carrying capacity of the environment is fixed and can never change.
e. none of these is a true statement, they are all false.

Suppose that a flower nursery benefits from having a butterfly farm located only a few miles away, because the presence of the insects greatly improves flower pollination. lawyers for the two companies meet to draft a legal document specifying the number of butterflies the farm promises to maintain in exchange for payments to be made by the nursery. which of the following types of private solutions to the externality of pollination has occurred in this case? charities moral codes and social sanctions integration of different types of businesses contracts it’s important to note that sometimes private solutions to externalities do not work. for example, this occurs when communications barriers or social customs are important enough relative to the potential gains involved that (a) the government must step in (b) the private solution is not feasible (c) the market system has a crisis

How important is it to have a powerful army and navy? give two reasons for your answer

17 points! ! (explain your answer)