Cold blooded, lay eggs in water, and respire both by skin and lungs, and they have a three-chambered heart.
Sink holes and crevasses might be a result of this <span />
<span>a)Stem cells must always be provided by a donor who is financially compensated.</span>
Natural selection is basically when organisms with the best traits survive and pass on their good traits to their offspring so that they will adapt easily and survive. Organisms who do not have ‘good traits’ that help them adapt and escape predators will be killed or eaten before they reproduce.
So in the end, natural selection is a form of evolution that allows the ‘fittest’ animals to survive and reproduce, while weeding out the unfit.
