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.
Answer:
A
Explanation:
Each enzyme operates best within a certain pH range.
Answer:
Severe head injury
Explanation:
Because pregnant women can wait, the nauseating patient can wait and a patient with broken collarbone can also wait. But the patient with severe head injury can't wait. Because of rapid blood loss and skull damage. If that patient doesn't treat on time it causes serious consequences.
Answer:
one way of the planet heating up is the fumes of are vehicles it pollutes the ozone layer there for making it slowly go away the ozone layer keeps some of the suns heat out and when its going away its making more heat come through i am not shore if its right but hope it helps and i am also in 11th grade so i know a little
Explanation:
