The choices for this question are:
A lichens →grasses →shrubs →trees
<span>B mosses →grasses →lichens →trees </span>
<span>C grasses →trees →mosses →lichens </span>
<span>D shrubs →grasses →trees →lichens
</span>
The correct answer is A. Lichens are able to survive in very harsh environments and would therefore be a suitable pioneer. Grasses would be suitable to succeed lichens as the lichens break down the larva rock into soil. After further breaking down of rock into soil by grass, shrubs will start to grow and these will be succeeded by trees as the ecosystem approaches maturity.
Natural selection is one of the basic mechanisms of evolution, along with mutation, migration, and genetic drift. Darwin's grand idea of evolution by natural selection is relatively simple but often misunderstood. To find out how it works, imagine a population of beetles: There is variation in traits.
Maybe the 2 fathers and one child
Mosses and algae both belong to the group of non-vascular plants because they lack vascular elements that in plants like ferns and other conduct water and nutrients through the plant. Because of this, the non-vascular plants are unable to control the water flow and the loss of water.
You are controlling the variable of if it gets vinegar and less water, or all water because that is all that changes.