Answer:
Renewable
Explanation:
Renewable resources include biomass energy (such as wood, sewage, and ethanol), hydropower, geothermal power, wind energy, and solar energy.
Answer:
Mercury is the smallest planet, but its surface gravity is about the same as that of the much larger Mars because Mercury is more dense.
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Answer: The primary two methods by which planet are found around other stars are:
I) Direct images in visible and infrared light.
Explanation: This is viewing the star by seeing itself. This method is very tedious and difficult because of the light made up by the extrasolar planets around the galaxy.
Extremely hot, forms in mantle, known as lava in surface, contains dissolved gasses
