Question

a. no, larger trucks don’t produce harmful greenhouse gases.
b. no, smaller cars and trucks don’t produce harmful greenhouse
c. yes, all vehicles produce harmful greenhouse gases.
d. yes, more people will drive smaller vehicles which produce less
greenhouse gases.

1. you can conserve water by doing which of the following?

a. repairing a leaky faucet
b. watering your lawn only at noon
c. washing your clothes in the morning
d. letting water run while you brush your teeth

1. which of the following factors contribute to smog?

a. automobiles
b. factory pollution
c. mountains surrounding urban areas

Explanation:

Question 10

To conserve water, we analyze each option:

• Option A: Repairing a leaky faucet stops water from dripping wastefully, so this helps conserve water.
• Option B: Watering lawn at noon leads to more evaporation, wasting water.
• Option C: The time of washing clothes (morning) doesn't affect water conservation.
• Option D: Letting water run while brushing teeth wastes water.

So the correct option is the one that reduces water waste.

• Automobiles (A) emit pollutants like nitrogen oxides and volatile organic compounds that contribute to smog.
• Factory pollution (B) releases large amounts of pollutants that can form smog.
• Mountains surrounding urban areas (C) can trap pollutants, leading to smog formation as the pollutants can't disperse easily.

So depending on the question's requirement (single or multiple), but if we consider the options, these factors contribute. If it's a multiple - choice where we select all that apply, then A, B, C. If it's single - choice, maybe A or B, but typically automobiles and factory pollution are direct sources, and mountains are a geographical factor that exacerbates smog.

Answer:

A. repairing a leaky faucet

Question 11 (assuming it's a multiple - choice with these as options, and we need to pick the correct ones. If it's single - choice, but usually smog is contributed by automobiles (emitting pollutants), factory pollution (releasing pollutants), and sometimes geographical features like mountains can trap pollutants. But if we assume it's single - choice or pick the main ones. Let's assume we pick the correct ones. If it's multiple - select, then A, B, C (if mountains trap pollutants to form smog). But if it's single - choice, maybe A or B. But let's proceed with the analysis: