How natural selection may lead to increases and decreases of specific traits in a population over time

Reasoning based on the ease with which we can bring something to mind involves the use of the heuristic

Which statement best describes evidence of a mulitcultural mix in east africa? a. because of what he learned during his pilgrimage to mecca, mansa musa was able to build a center of islamic scholarship. b. the traders of ghana brought back with them slaves from the mediterranean who taught the ghana rulers about christianity. c. clans were made up of lineages that were descendants of multiple ancestors from different regions of africa. d. swahili became a language made up of words spoken by traders along the coast of the indian ocean.

What is one example of economic policy? a. a state government increasing tax rates b. a neighborhood group collecting money to build a playground c. a city building a new school d. a company giving high-performing employees a raise