Our sleep-wake cycle follows a(n) rhythm
A.
circadian
B.
orbital
O c. hyper-loop

Ineed the answer ! what year was the 13th amendment passed in the us?

Which of the following is an example of a government’s laissez-faire approach to business and the economy?

Why was the u. s. annexation of hawaii delayed until william mckinley became president? a: the rebels who overthrew queen liliuokalani opposed u. s. annexation. b: the senate did not approve the treaty of annexation until mckinley entered the white house. c: supporters of the nationalist cause were in the majority in hawaii until 1898. d: mckinley’s predecessor, grover cleveland, refused to sign the treaty of annexation.