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there are classes of ozone-depleting substances.

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Which was most likely an effect on society that resulted from improvements in blood handling during world war i and world war ii?

Drag each description to the correct location on the image. not all descriptions will be used. describe the parts of a comet. the frozen part of the comet the atmosphere of gases and dust formed when the nucleus vaporizes tail made of small, solid dust particles tail made of ions that appears to point away from the comet's orbit

Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above