Question

1. what is the impact of increased levels of greenhouse gases on earths climate? a. reduced sea levels b. enhanced greenhouse effect leading to global warming c. lower global temperatures d. more stable weather patterns 8. what is the significance of meioses in the context of evolution? a. it reduces the number of mutations b. it prevents genetic variation c. it increases genetic diversity, allowing species to adapt and evolve d. it produces identical offspring 9. which pollutant is primarily responsible for smog formation in the atmosphere? a. particulate matter, nitrogen oxides, and carbon dioxide b. oxygen c. water vapor d. glucose

Explanation:

• For question 7: Greenhouse gases trap heat, enhancing the greenhouse - effect and causing global warming. Sea levels rise due to global warming, not reduce. Global temperatures increase, not lower, and weather patterns become more erratic, not stable.
• For question 8: Mutations are a source of genetic variation. Meiosis increases genetic diversity through processes like crossing - over and independent assortment, allowing species to adapt and evolve. It doesn't reduce mutations, prevent genetic variation, or produce identical offspring.
• For question 9: Smog is formed from pollutants such as particulate matter, nitrogen oxides, and volatile organic compounds reacting in the atmosphere. Oxygen, water vapor, and glucose are not primary pollutants for smog formation.

Answer:

1. B. Enhanced greenhouse effect leading to global warming
2. C. It increases genetic diversity, allowing species to adapt and evolve
3. A. Particulate matter, nitrogen oxides, and carbon dioxide