Answer:
Explanation:
Inner planets orbit the Sun at higher speed than outer planets.
Earth is slightly closer to the Sun on one side of its orbit than on the other side.
<span>limited opportunities for agriculture</span>
A and d I believe are correct
Additionally, other nutrient the vitamins and minerals like vitamin D, iodine, magnesium, and zinc need phosphorus to be balanced and used. One of the most important soil minerals for plants is phosphorus.
It is a component of plant cells and is necessary for cell division and the growth of the plant's growing nutrient tip. It is essential for young plants and seedlings because of this. Bone and teeth are formed with the help of phosphorus. Additionally, phosphorus is a component of a number of essential compounds, such as those that the cell uses for DNA, cell membranes, and the energy (deoxyribonucleic acid).
To learn more about nutrient, click here.
brainly.com/question/1268939
#SPJ4
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.
