Answer:
Option A.
Explanation:
It travels faster in part A than in B, because the distance between the earth and the sun in part A is shorter.
Answer:
Mutations can lead to positive adaptations in an organism
Global warming and Global cooling. As the Earth's orbit becomes more elliptical, (as it is now,) it begins a Global warming and enters into an Interglacial period, when the Earth is mostly warm. When the Earth's orbit becomes more circular around the sun, (as it has been at least two or three times before so far,) it begins a Global cooling and enters into a Glacial period. I hope that this helps!