Question

Dave is planning to build an electric power station to supply electricity to his community. To help him decide which type of electric power station to build, he has put together the table below, which summarizes some of the advantages and disadvantages associated with different technologies.

Power Technology Advantage Disadvantage
hydroelectric no greenhouse gas emissions upsets natural ecosystems
coal inexpensive releases greenhouse gases and other pollutants
wind no greenhouse gas emissions can't always supply electricity when it's needed
solar no greenhouse gas emissions expensive to build, install, and replace
natural gas easily supplies electricity when it's needed releases greenhouse gases and other pollutants

If Dave wants to use a technology that does not directly impact climate, which of the above technologies should he consider?
A.
hydroelectric, wind, and solar
B.
solar, wind, and natural gas
C.
coal, wind, and natural gas
D.
hydroelectric, coal, and solar

Answer 1

If Dave wants to use a technology that does not directly impact climate, he should consider technologies that do not release greenhouse gases. Based on the table, the technologies that fit this criterion are:

- Hydroelectric (no greenhouse gas emissions)
- Wind (no greenhouse gas emissions)
- Solar (no greenhouse gas emissions)

Natural gas and coal release greenhouse gases and other pollutants, so they do not fit the criteria.

Therefore, the correct answer is:
**A. hydroelectric, wind, and solar**.