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Why does a reduction reaction always accompany and oxidation reaction

Which two activities provide the reactants for cellular respiration? A. releasing air and exercising B. breathing in air and exercising C. releasing air and eating food D. breathing in air and eating food

Shown below on the left is the structure of 2-methylpentane. what is the name of the structure on the right, labeled (b) ?

The brightness of a light is determined by

What evidence is there that the universe is expanding? Explain.

If you put a carnation in water through what process does it enter the steam

The collective reactions with a cell or an organism are known as

Which term describes baody parts of different organisms that are similar in form

Why would a body cell that is not a phagocyte need to present antigens?

Which component of the nervous system takes in information from the environment? brain spinal cord sensory receptors motor neurons