The development of agriculture is best described as the
a.
use of irrigation to increase food production
b.
use of cultivated plants for subsistence
c.
use of metal tools, such as plows, in farming
d.
use of animals as labor for farming

(1) which phrase describes an important agricultural change that occurred during the mississippian period? (a) first cultivation of wild grains (b) expansion of marsh elder farming (c) spread of corn agriculture (d) gathering of nuts and berries (2) which group of native americans use northwestern arkansas as it’s traditional hunting grounds? (a) osage (b) quapaw (c) woodland (d) caddo

Can someone me with this plz? ! i'm putting 20 points on it!

Which part of a mountain receives the majority of moisture due to the rain shadow effect? a. the leeward side b. the windward side c. the bottom of the mountain d. all parts of the mountain receive equal amounts of moisture.