No system is closed off by it surroundings.
This is true, for it is called redshift
Answer:
i think the answer is -7
Explanation:
4 - 46 = -42 -42\6 is -7 i dont know if its right
Answer: directional
Explanation:
Because only one trait was favored. When bears are cold, being bigger helps them better adapt to the coldness. Adjusting to the weather is one trait.
Fossil fuels release carbon dioxide gas when they burn which adds to the greenhouse effect and increases global warming. Of the three fossil fuels, for a given amount of energy released, coal produces the most carbon dioxide and natural gas produces the least.
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