19. Which of the following would be the most likely consequence of converting from biomass-produced methane to solar power as the primary energy

19.

Which of the following would be the most likely consequence of converting from biomass-produced methane to solar power as the primary energy source for a home? (2 points)

Energy costs would rise over time.

Nearby landfills would fill up faster.

Maintenance would require more time.

More greenhouse gases would be released.

Power generation would be more consistent.

20.

Which of the following would be the most likely consequence of switching from solar power to geothermal power as the primary energy source for a power plant? (2 points)

Power generation would be more reliable.

Maintenance would be needed more often.

Greenhouse gas emissions would drop to zero.

Less new infrastructure would need to be built.

Resources might be unavailable in certain locations.

21.

Which of the following describes the function of a penstock? (2 points)

to make sure silt does not build up

to prevent swimmers from getting stuck

to direct water toward a turbine in a dam

to keep the river from overflowing its banks

to give animals access to the opposite bank