1. Which of the following explains why some energy sources are renewable?
A. Renewable energy sources exist in a fixed amount and cannot be easily replaced.
B. Renewable energy sources can be replenished naturally, at or near the rate of
consumption.
C. Renewable energy sources include natural gas and other fossil fuels because they are
made from the remains of ancient organisms.
D. Renewable energy sources use advanced technologies and have been discovered in
recent years, making them newer energy sources.