Can be a number of things, rain fall quota, climate, population, vegetation..any of those.
Answer:
Its true because blood flow thru our veins
Explanation:
Artificial and Natural selection are really the same process but one is driven by man and the other is driven by an organism's traits that allow them to survive and reproduce. Artificial selection is when mankind chooses certain traits in plants and animals and breeds to enhance that trait.
Protostomes develop a mouth first followed by the anus. Deuterostomes are the opposite.
Cancer<span> can </span>start<span> when just one of them </span>begins<span> to grow and multiply too much. The result is a growth called a tumor. Benign tumors are localized growths - they only cause problems if they put pressure on nearby tissues, such as the brain.</span><span />
