What effect did the addition of an enzyme have on the chemical reaction shown in the graph? A. The reaction stopped.
B. The activation energy was raised (increased).
C. The reaction slowed down.
D. The activation energy was lowered (decreased).

Which of the following describes a similarity between the american revolution and the french revolution? o a. both resulted in the creation of constitutions that are still in use. o b. both were influenced by enlightenment thinking about equality. o c. both rose out of the desperation caused by economic collapse. o d. both involved a colony revolting against an imperial government.

The federal goveremnt ability to draft people into the army is?

Why was the sixteenth amendment important to woodrow wilson’s efforts to regulate the economy? a) the sixteenth amendment lowered interest rates charged by banks. b) the sixteenth amendment allowed congress to levy an income tax c) the sixteenth amendment lowered tariffs on imported goods d) the sixteenth amendment allowed congress to break up monopolies