Answer:
A vertebrate is an animal or species distinguished by its possession of a backbone or spinal column. Vertebrates can be insects, fish, mammals, birds, reptiles, and also amphibians.
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Answer:
THe correct answer is:
The water cycle.
The repeated movement of water between earth's surface and the atmosphere is called the water cycle.
Explanation:
The water cycle is the natural movement process of water through the evaporation, condensation, transpiration and precipitation processes that transport the water from one place to another by changing its states from liquid as rivers and oceans, to gas as clouds and steam, and solid as ice and snow.
The Prime Meridian marks zero degrees longitude. Without it, the other degrees of longitude cannot be measured.