Question: Soil is sometimes called a bridge between life and the non-living world. Explain what that means.
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Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c.ozone layer hole d.increase in sea levels

Which of the following best describes the relationship between glucose and complex molecules such as hormones?

Donde se encuentra el adn nuclear en un organismo eucariota?