I believe the answer is 2: multiple ecosystems in a biome
decomposition of what was alive then the remains are buried by sediments which results in fossilization
Phenotypically and genotypically there are only two different ratios. If you think of a Punett square...
<span>You could say that a pea plant with the trait for the dominant color green (G) could also carry the recessive trait for yellow (g). So let's say you mate a dominant green, (Gg) with another dominant green, (Gg). You would get 1 (GG), 2 (Gg) and 2 (gg). </span>
<span>Phenotypically (as in physical traitwise), the ratio is 3:1 because you have 3 green colored peas and one yellow. </span>
<span>Genotypically (as in traitwise), the ratio is 1:2:1, because you have 1 (GG), 2 (Gg) and 1 (gg). </span>
<span>So although it's random, for any specific trait there are only 4 different outcomes.</span>
The process is called Erosion. During the Erosion, materials from one place such as soil and rocks will be transport to another location. The process is also contrast to the process called deposition which responsible for the control of the arrival of the materials to a new place like the rocks from Blue ridge Mountain to Virginia's Coast.
