How is it that crop yields increased in the decades after world war ii despite the number of farms decreasing? a. farmers began planting in new regions of the u. s. b. a change in climate produced exceptional yields. c. new machinery made harvesting crops much easier. d. imported seeds were better suited to american soil.

interdependence is when all participating groups and individuals depend on each other. if you depend on one anothers goods, you end up trading in order to get the items you're looking for. (for ex: if i have food and you have water, we trade in order to depend on each other to live)

he is known for discovering   the fossil of a female hominin australopithecine   known as "lucy" in the afar triangle region of hadar, ethiopia.

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