<span>nuclear as in the sun. It heats up the organic material until nitrogen is released as it decomposes. Nitrogen recirculates back into the air supply. </span>
Soil scientists use the capital letters O, A, B, C, and E to identify the master soil horizons<span>, and lowercase letters for distinctions of these horizons. Most soils have three major horizons: the surface horizon (A), the subsoil (B), and the substratum (C). Some soils have an organic horizon (O) on the surface, but such a horizon can also be buried. The master horizon, E, is used for subsurface horizons that have a significant loss of minerals (eluviation). Hard bedrock, which is not soil, uses the letter R.</span>
Chloroplast and cell wall
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Answer:natural selection or adaption
Explanation:
Answer:
Genetic Code
Explanation:
Genetic code is a universal language. DNA and RNA both are composed of this genetic code arrangement that is universal. If body is like a program, then genetic code is the basic code that the body is composed up of.