Answer:
Oxygen-rich blood flows from the lungs back into the left atrium (LA), or the left upper chamber of the heart, through four pulmonary veins. Oxygen-rich blood then flows through the mitral valve (MV) into the left ventricle (LV), or the left lower chamber.
OR
The blood becomes oxygenated in the lungs. Oxygenated blood leaves the lung via the pulmonary vein. Blood moves into the left ventricle. Blood is pumped into the aorta, which carries oxygenated blood around the body.
Answer:
The soap removed her skin's natural oils which can kill bacteria, while the cool water left the oil on her skin.
Explanation:
Growth is the answer you're looking for I think.
Answer:
Because offspring with two parents will share half of each parent's DNA.
Explanation:
Sex cells contain half of the genetic information of an organism's regular cells. This is because a sexually-produced organism will be unique; it will share genetic information with both of its parents, rather than be identical to its bearer (like an asexual organism would be). When a sex cell meets another sex cell, their DNA will meet as well and change/adapt to suit the organism. If a sex cell had all the information needed to create an embyro, instead of half, which requires another cell's information to fill the DNA void.... well, it would just do it.
Describe<span> how </span>eukaryotic cell's chromosomes change as a cell prepares to divide<span>. Before </span>cell<span> division each </span>chromosome<span> is replicated. At the beginning of division each </span>chromosome<span> has two daughter chromatids. ... A scientist treats </span>cells<span> with a chemical that prevents DNA synthesis.</span>