What concept is illustrated by the fact that congress has the power to introduce and pass laws, and the president has the responsibility to enforce all federal laws?

a. federalism
b. separation of powers
c. checks and balances
d. judicial review

The pope claimed he was the head of byzantine churches only.

Which statements explain reasons why unconformities occur? check all that apply. rocks along a fault break and move. igneous rock forms at earth’s surface. rocks erode and sediment is deposited. no sediment is deposited over a long time. igneous rock forms between sedimentary layers.

What specific events led richard nixon to resign the presidency