Where do the Sun's rays hit Earth's surface nearly at right angles?
Arctic Circle
Tropic of Cancer
equator
Tropic of Capricorn
Antarctic Circle

relationships play a major role in a human's emotional and mental wellbeing. healthy relationships with the people around you are even linked to a smaller production of cortisol, a stress hormone.

enhanced global partnerships and exploration capabilities may advance international preparedness for protecting the earth from catastrophic events such as some asteroid strikes, advancing collaborative research on space weather and protecting spacecraft by developing new means for space debris removal.