What two chemicals combine to form smog? a. Nitrogen dioxide and Water
b. Carbon monoxide and Oxygen
c. Nitrogen dioxide and VOCs
d. Sulfur dioxide and nitrogen dioxide

the answer is "a.) well–developed vascular system."

explanation:

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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some fungi obtain their nutrients from a living host (plant or animal) and are called most biotrophic fungi have fairly narrow host ranges—they are specialized on a limited called rhizomorphs that allow the fungus to grow from one tree to another. ascospores are formed inside a sac-like structure called an ascus. so your answer is a