Which is a chamber that receives blood into the heart and drives it into a vebtriclr

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

Which coal field location is related to coal fields in the eastern united states and supports the theory of continental drift? eastern india southern africa western australia northern south america

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give