Just write a summary don't do the little details and don't explain everythinh
Answer:
d
Explanation:
when one variables is zero ,the other is also zero
Answer: Varying amounts of the Moon's lit surface being visible from Earth.
Explanation:
Phases of the moon can be defined as the different shapes of the moon visible from the Earth. This happens because sun lits up the face of moon and due to different position of moon in the orbit around earth, varying portion of the lit surface of the moon is visible from Earth. Refer to the diagram below:
Natural was thought to be straight up or straight down and violent was thought to be the result of a push or pull