Crossing over occurs between prophase I and metaphase I and is the process where two homologous non-sister chromatids pair up with each other and exchange different segments of genetic material to form two recombinant chromosome sister chromatids. So the answer would be Prophase l. Hope this helps
I'm assuming that the choices are the ways urban landfills use to increase decay rate for most trash? If so, then the answer would be '<span>increase the number of aerobic bacteria'. Increasing the number of aerobic bacteria increase the decay rate for most trash.</span>
We inhale oxygen, in which is carried around the body for cellular respiration. To answer your question, carbon dioxide molecules are converted from oxygen therefore, it technically goes out of the cell.
Two atria and two ventricles..
