As the semimajor axis of a planet increase, the orbital period will decrease and the speed of the planet will decrease.
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What is Kepler's second law?</h3>
Kepler's second law of planetary motion describes the speed of a planet traveling in an elliptical orbit around the Sun.
This law exaplains the speed of planets around the sun, the speed of the planet increases as it nears the sun and decreases as it recedes from the sun.
From the findings, the astronomical unit of the Mercury is 0.387 and the orbital period is 0.24 year.


From the equation above, as the semimajor axis of a planet increase, the orbital period will decrease and the speed of the planet will decrease.
Learn more about orbital period here: brainly.com/question/22247460
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Arctic temperatures are increasing; the Red Fox is expanding its habitat to compete with arctic fox. Arctic temperature is a climate characterized by being long, cold and short winters and a cool summer. The Arctic is largely surrounded by land it consists of an ocean.
Answer: They contain substances/substrates in specific ways that heighten the chances of the chemicals reacting with each other
Explanation:
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Because they contain CARBON