The author of this passage is trying to _____ A. support scientists in their search for new sources of energy. B. calculate the energy demands of the future. C. present some new sources of en
The author of this passage is trying to _____
A. support scientists in their search for new sources of energy.
B. calculate the energy demands of the future.
C. present some new sources of energy.
D. explain the benefits and shortcomings of some kinds of energy.