Question

which of the following contribute to dirty air? select three options.
photosynthesis
tossil fuels
smoking
mold
respiration

Explanation:

• Fossil fuels: When burned, they release pollutants like sulfur dioxide, nitrogen oxides, and particulate matter.
• Smoking: Releases harmful chemicals such as carbon monoxide, tar, and nicotine into the air.
• Mold: Can produce spores and volatile organic compounds that contaminate the air.
• Photosynthesis: Absorbs carbon dioxide and releases oxygen, improving air quality.
• Respiration: Releases carbon dioxide, but it is a natural process and not a significant contributor to "dirty" air in the context of pollution.

Answer:

B. fossil fuels, C. smoking, D. mold