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astra-53 [7]
3 years ago
14

3 properties of ultraviolet rays

Biology
1 answer:
arsen [322]3 years ago
5 0
Wavelengths, light and the skin, fluorescent lights
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Which partly explains why the domestication of animals tended to increase the human food supply?
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A

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Before domestication of animals, these animals were wild and early humans used to hunt for food. The hunting process  was not always successful and took a lot of energy from the body. Domestication of these animals made food available and other conveniences. An example is cows that emanated from the domestication of wild aurochs. They provided the milk and meat for humans and also labored in the farm in the cultivation of domesticated plants.

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Coral reefs cover less than ___ of the ocean floor. <br> A)1% <br> B)2% <br> C)4% <br> D)3%
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3 years ago
In neuroscience, depolarization is an "all or nothing" response; what does that
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Answer:

The correct answer is - The neuron's intracellular charge must get more positive to meet a certain  thresh hold in order to depolarize. If the neuron does not hit that threshold, then the  neuron will not fire

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