what is the meaning of b.c. and a.d???

Answer: before Christ
Question: when is episode 4 of guardians of the galaxy coming out?

Answer: October 10, 2017
Answer this question: who called for the constitutional convention to be held??

delegates from five states
Q: when was the national cathedral washington dc built?A: 1907–1990
Input: when did egypt get the sinai peninsula back?

Output: 1982
what effect does anp have on blood pressure???

Answer:
decreased blood pressure