The frontal lobe takes about 1/3 of the cerebral cortex.
In the gradual speciation<span> model, species diverge slowly over time in small steps while in the punctuated equilibrium model, a new species diverges rapidly from the parent species. The two key influencing factors on the change in </span>speciation rate<span>are the environmental conditions and the population size.</span>
The answer is A. Being a liquid at room temperature, surface tension, and that ice floats.