Water. Water is being constantly reproduced while we are running out of coal, oil, and gas.
As in 2009, there are approximately 20,000 cities or metropolitan areas in the United States.
The correct answer is letter C
Answer:
Orbit.
Explanation:
After the discovery of Uranus, scientists were having trouble figuring out the planet's orbit. They realized that there must be another planet farther out than Uranus.
Pteromerhanophobia : fear of flying
Zoophobia : fear of animals
Acrophobia : fear of heights
Nyctophobia : fear of darkness
Ophidiophobia : fear of snakes