We share 50% of our DNA with trees, 70% with slugs (gross), 44% with honey bees, and even 25% with daffodils.
The answer is actually none of the above. The Devonian Period allowed for amphibians to evolve, as well as terrestrial vertebrate. Forests grew to cover most of the continent. All of these events happened in the Devonian Period.
Sedimentary rock is the most likely. Igneous and metamorphic rocks go through too much pressure and heat for fossils to be preserved. The bones would just melt away.
Types of natural selection: Different types of natural selection can impact the distribution of phenotypes within a population.In (a) stabilizing selection, an average phenotype is favored.In (b) directional selection, a change in the environment shifts the spectrum of phenotypes observed.In (c) diversifyingselection.
A) Sediment builds up over organisms :)
