The primary case of Nigeria's water pollution would be oil spills.
Answer:
The celestial sphere is a fictional sphere to which all celestial objects can be projected.
Explanation:
At any time an observer can see only the half of celestial sphere because the other half lies under the horizon. The celestial sphere is the medium used for sphere astronomy. The celestial sphere does not have a defined magnitude. It can be infinite or at least really big.
You have a support system to help you when you fail so that you can be resilient and keep on going.
Answer:
Rivers are the natural resources which provide various resources for the survival of the people. The Columbia river is about 2000km vast in dimension. It is divided and spread into various tributaries among the largest is the snake tributary. The river consists of fresh water and makes it ideal for drinking purposes and fishes of various species present provide food and job opportunities to the native people. The hydro power formed from the river is used to supply Washington and provides continuous power for survival.