Answer:
By studying the fossil record we can tell how long life has existed on Earth, and how different plants and animals are related to each other. Often we can work out how and where they lived, and use this information to find out about ancient environments. Fossils can tell us a lot about the past.
Explanation:
Answer:
work is measured in newton-meters (N-m).
Many causes are responsible for lack of clean water. Water becomes polluted as a result of human factors. Humans pollute water in many ways, these include:
1. discharging of waste products from industries into the water bodies.
2. The emptying of sewage into water bodies
3. Eutrophication caused by man when water erosion carried chemicals such as fertilizers and pesticides into water bodies.
4. The occurrence of oil spillage in waters during crude oil extraction.
5. over use of water for recreational activities without making any effort to restore the water to their original state.
Answer: Its D
Explanation: Thats the 2nd ffrom final step from letting out wasts