Select the best analysis to complete this sentence: Prehistory includes the time prior to the use of writing, because __________. A.without writing, there is no accurate record of history, only artifacts B.without writing, the early people lived a much simpler life C.without writing, historians must associate uses of artifacts with current similar objects D.without writing, history is lost to the ages and historians are really only guessing
In the carbon cycle, decomposition is the breakdown of a substance into simpler substances. What is the name for the process of the nitrogen cycle that produces ammonia?
In a deciduous forest, there is much colder temperatures, and significantly less rainfall. These animals would likely want a thicker water-proof coat. This is because the thicker coat would allow heat to become trapped, keeping them warm in the winter, and the water-proof coating prevents water from freezing in their fur, making them colder.
The process by which complex molecules are broken down into simpler ones for the body’s use is called