The lungs pick up oxgen and release carbon dioxide
Explanation:
the light energy is converted to heat energy in order to break the covalent bonds in the water molecules that are combined with CO2 to create glucose
B because a and c are incorrect and in letter d it states earth has no protection at all. And it DOES have protection B is most definitely true
Homologous types of chromosomes pair together to form a bivalent. They undergo synapsis which is the process of pairing. In each bivalent. there would be a total of two centromeres and four sister chromatids. crossing over is the term used for the physical exchange of material between two homologous chromosomes. A<span> chiasma</span><span> is the visible evidence that exchange of genetic material occured.</span>
