Fish come from fresh water, salt water, the ocean, rivers, etc. They also come from the male and female fish that mated
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Eastern Europe & the (former) Soviet Union transitioned to a:
Market-based economy.
Answer:
The Moon is significantly smaller than the Earth and so its core contained less energy to begin with and also cooled significantly faster. Thus, the Moon's core is relatively cool and solid, whereas a portion of the Earth's core is liquid.
Explanation:
