Hemoglobin is a protein that carries oxygen through the blood. In sickle cell anemia, this protein has a sickle cell shape due to a change in a single amino acid. This is an example of the structure altering the protein's function.

a. the production of carbon dioxide through the process of photosynthesis

he movement of air through earth's or any planet's atmosphere is called wind, and the main cause of earth's winds is uneven heating by the sun. this uneven heating causes changes of atmospheric pressure, and winds blow from regions with high pressure to those with low pressure.

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1. b.

2. d.

3. a.

5. d.

6. c.

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