At 180 degrees longitude, the represents the point at which the eastern and western hemispheres experience different days.
a.
equator
b.
prime meridian
c.
tropic of cancer
d.
international date line

What is the famous rainforest in costa rica called?

This is a 2017 topographic map of puerto rico in the united states, and i'm sorry that people there have suffered such a disaster. i want to ask, what do the yellow dots and areas represent on this graph? and the blue area and the little blue circle, and the little blue sign that looks like a signal tower, what do they stand for?

Which events occurred during the space race? check all that apply. (a) nasa was established. (b) yuri gagarin orbited earth. (c) the soviet union launched salyut. (d) the united states launched skylab. (e) the united states launched explorer 1.