Many scientists agree that the universe is about years old.
-30 billion
-1 billion
-13 billion

One of the methods used to reduce energy use is: a. energy efficiency c. energy conservation b. energy reservation d. energy holding select the best answer from the choices provided a b c d i know the answer is not option a

In general, how long does it take to accomplish a long-term goal? a.a few days to a weekb.a few weeks to a monthc.a few months to a yeard. more than a year

For this question look at the hydropic diagram water that is heated by the sun evaporates. select the number that represents it.