Answer:D. Compound.
Explanation:
A compound is defined as a pure substance: formed when two or more elements chemically combine to form bonds between their atoms.
Answer:
The angle of incoming sunlight varies at different places
Answer: As Earth orbits our Sun, the position of its axis relative to the Sun changes. This results in a change in the observed height of our Sun above the horizon. For any given location on Earth, our Sun is observed to trace a higher path above the horizon in the summer, and a lower path in the winter.
Explanation:
Covalent. The two hydrogen atoms share their electrons such that both outer shells are filled.
