Question

unit exam - populations
catastrophic events. the search for new frontiers,
including the exploration of planets like mars, may offer
growth opportunities, but challenges of sustainability and
distribution persist.
how did the spread of humans on the planet
change with the discovery of new continents?
no changes in the spread of humans
a tendency to avoid coastal areas
wide distribution in deserts
clumping around resource - rich areas

Explanation:

When new continents were discovered, humans tended to settle in areas with abundant resources (like fertile land, access to water, trade opportunities). Option A is wrong as discovery of new continents did change human spread. Option B is wrong as coastal areas are resource - rich (trade, fishing) and were settled. Option C is wrong as deserts have scarce resources and aren't widely settled. So the correct answer is the option about clumping around resource - rich areas.

Answer:

D. clumping around resource - rich areas