Answer:
D
Explanation:
won't be A as that means infant death
b means mother death rate
C is obesity rate
Answer:
<u>Geocentric Model</u>: - this model is Earth Centered
-Retrograde motion is explained by epicycles
<u>Heliocentric Model</u>: - This model is Sun Centered
-Retrograde motion is explained by the orbital speeds of planets
<u>Both models</u>:- Epicycles and deferents help explain planetary motion
-Planets move in circular orbits and with uniform motion
-The brightness of a planet increases when the planet is closest to Earth
Explanation:
Retrograde motion is an apparent change in the movement of the planet through the sky. Ptolemy's model of the solar systems was geocentric, where the Sun, Moon, planets and start all orbit the Earth in perfectly circular orbits. However this perfectly circular orbits around the Earth did not explain the occasional retrograde motion of the planets. In the Copernicus' heliocentric model, retrograde motion of planets is naturally explained. The explanation for retrograde motion in a heliocentric model is that retrograde occurs roughly when a faster moving planet catches up to and passes a slower moving planet.
<span>D is the correct answer. According to the 2010 - 2015 list of population growth by the United Nations, Afghanistan is number 21 on the list. This is followed by the Maldives at number 76, then Nepal at number 120, and finally Sri Lanka at number 160.</span>
Answer:
tightly packed group of older stars
large grouping of more than two stars
loose, disorganized star cluster held together by gravity
