Answer:
Ptolemy included epicycles in his orbits.
Explanation:
Ptolomy's model of the solar system was geocentric, where the sun, moon, planets, and stars all orbit the earth in perfectly circular orbits. The problem with perfectly circular orbit around the Earth is that they do not explain the occasional backward motion, or retrograde motion, of the planets.
The Greeks insisted that the motion of the planets be perfectly circular. Ptolemy modeled the planets making small circles around a point that orbited the Earth. These smaller circles were called epicycles, and they allowed the planets to move backward relative to the background stars.
D. The atmosphere of Mars contains more oxygen than Earth's atmosphere.
To build an explanation of global climate change, Jamal must include the most important factors of this phenomenon such as the emission of gases from human activity and the greenhouse effect.
Climate change is a phenomenon produced by the increase in the planet's temperature caused by emissions into the atmosphere of greenhouse gases derived from human activity, which are causing variations in the climate that would not occur naturally.
To write an explanation about climate change, the most important topics must be included, that is, the
- Causes (gases produced by human activity)
- Development (greenhouse effect)
- Consequences (global warming).
Note: This question is incomplete because it does not have the explanation statements.
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