According to freud, what part of the mind is concerned with morals and ethics?

a. ego
b. preconscious
c. id
d. superego

Cost and benefit in economic example

Apopulation is a group of individuals of a single species existing together in an area. a population’s range, the area it occupies, changes over time. populations, in turn, may form a network, or metapopulation, connected by individuals that move from one group to another. within a population, the distribution of individuals can be random, uniform, or clumped, and the distribution is determined in part by the availability of resources. how might the geographic range of a species change if populations could not exchange individuals with each other? how would your answer depend on what type of metapopulation existed?

What nitrogenous bases are found in rna