Which process will help reduce CO₂ levels in the atmosphere?
I. increase clear cutting of forests
II. car pooling rather than driving individual cars
III. using more renewable energy sources, such as wind or solar power
IV. generating more electricity with nuclear power

(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

What is a small water source like a stream or brook?

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d