Describe an experiment where a control group would not be necessary but controlled variables would be necessary to ensure a valid results are obtained (science) PLEASE HELP ASAP

Plz me asap! and plz put a real answer! which of the following best describes richard russell's contribution to the war effort? by serving on the senate's naval affairs committee, he investigators learn how the pearl harbor attack was carried out. by to establish military bases like georgia's fort benning, he the state become an important resource to the federal government. by traveling to the war's regions, he develop maps of europe and the pacific. by working with his state's shipyards, he was able to obtain federal contracts to supply the military with ships built in savannah and brunswick.

Which of the following might cause the inflation rate to spike up sharply? the purchasing power of the average consumer decreases due to a sluggish economy. plentiful rainfall and moderate temperatures result in good harvests of wheat and soybeans. the items in the cpi market basket change to account for changing consumer buying habits. prices on world oil markets rise steeply due to war in the middle east.

In at least two paragraphs, discuss the differences between the principles of republicanism and democracy. explain whether you think the united states is more of a republic or a democracy. refer to at least one example from the constitution. (10 points)