This can be caused by over grazing from the livestock or even wild animals such as rabbits. Rabbits are known to breed very quickly and can destroy an ecosystem with their sheer numbers.
It is an example of directional selection.
The different kinds of natural selection can influence the distribution of phenotypes within a population. In stabilizing selection, an average phenotype is preferred.
In directional selection, a modification in the surrounding changes the spectrum of the observed phenotypes, and in diversifying selection the extreme values for a trait are preferred over the transitional values. This kind of selection usually pushes speciation.
The directional selection, in the field of population genetics, refers to a mode of natural selection in which an extreme phenotype is preferred over other phenotypes, making the allele frequency to change with time in the orientation of that phenotype.
Hypertonic, because the water is leaving the cell to get to a higher (hyper) amount of solute.
Answer:
Explanation:
rocks moves mainly because of sea current if you are reffereing to the ones near ocean
if you are not referring to the ones near the ocean then no they do not move they only move if a human or onject moves it it has no support to even move the only rock that can be moved is called Sailing stones (also called sliding rocks, walking rocks, rolling stones, and moving rocks) are part of the geological phenomenon in which rocks move and inscribe long tracks along a smooth valley floor without animal intervention.
