Which led to population growth during the Industrial Revolution?

fewer wars
the domestication of animals
less pollution
the germ theory of disease




18. The negative effects of tilling include _____.

improved crop production
reduced need for energy input
reduced soil drainage
increased soil erosion




19. A dramatic decline in the population of Europe in the 1300s was caused by the _____.

Thirty Years’ War
bubonic plague
cholera outbreak
potato famine




20. The low population-density of hunter-gather societies allows the environments to _____.

deteriorate
expand
regenerate
change




21. Quinoa is a _____.

historical plant native to Asia
type of cover crop
type of wheat
histo