Answer:
competitive exclusion
Explanation:
competitive exclusion principle says that two species can't coexist if they occupy exactly the same niche
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B. Obama was the nation's first African-American president.
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A beaver lives for 10 years .
Answer:
Neuroplasticity
Explanation:
This refers to the physiological changes in the brain caused by our interactions with our environment. From the day the brain begins to evolve in utero until the day we die, cells in our brains reorganize their relations in response to changing needs. This complex cycle helps us to learn from and respond to various experiences
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1) D. Oxidizes in air
2) B. Physical; dissolve (This is because salt can also be separated from the water)
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