Which is a pure substance? a. air b. nitrogen c. apple juice d. tap water

Which of the following statements is true about energy quantization at the atomic level? electrons in the outermost orbits are the most stable. electrons in all the orbits around the nucleus have the same amount of energy. electrons in the orbit closest to the nucleus have the least amount of energy. electrons absorb or release the same amount of energy independent of the energy levels.

Explain how global warming could have affected yellowstone frog and salamander habitat's, resulting in changes in the populations of these species

The compound formed from 2 atoms of hydrogen and one atom of oxygen is