C is the answer theories are like guesses whereas a law is the truth
Answer:
When compared to Earth, which of the following is true of Mercury and Venus? Mercury and Venus have slower periods of rotation (longer days) than Earth. Which of the following lists accurately relates which terrestrial planets have moons and how many moons they have? Mercury and Venus (no moons).
Explanation:
Two questions which arises in my mind about aurora borealis are:
- Why does aurora borealis occur?
- Why does aurora borealis occur in a particular time of the year?
Answers:
- As solar wind approaches the Earth, it meets the Earth's magnetic field. In the ionosphere, the ions of the solar wind collide with atoms of oxygen and nitrogen from the Earth's atmosphere. The energy released during these collisions causes aurora borealis.
- Aurora borealis is active the whole year. Since it needs to be dark in order to see aurora borealis in the sky, late August/September through the very beginning of April is the best time to go to a destination located in the aurora zone for a chance to see them.
Note: These are the questions which arises in my mind only. It may differ from person to person.
Hope you could understand.
If you have any query, feel free to ask.
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Sedimentary rock can be transformed into B. Metamorphic rock through heat and pressure.
