Answer:
Rocks.
Explanation:
Scientists study rocks from the Precambrian period because isn't really a significant fossil record from the Precambrian.
Answer: Coal is primarily used as fuel to generate electric power in the United States. In coal-fired power plants, bituminous coal, subbituminous coal, or lignite is burned. The heat produced by the combustion of the coal is used to convert water into high-pressure steam, which drives a turbine, which produces electricity.
Explanation:
Answer:
Donations should be encouraged to help needy peoples and build a better society. Donations also show the kidness of individual. Donating small amount also may save someones life and health. This is why donations should be encouraged to save the society.
The direct result of a normal cell's ability to express only certain genes is that the cells can differentiate and specialize. In multicellular organisms, nearly all cells have the same DNA, but different cell types express distinct proteins. Gene encodes proteins and proteins dictate the cellular functions. Thus, thousands of genes expressed in a particular cell determine what that cell can do.
