Answer:
number 4 because they look similar in way like there maybe backwards?
The slide should be moved when viewing under a high power magnification because if we move it the structure that we are observing may change and sometimes the organism that we are observing may fell down
Hope my answer is helpful to you
<span>Red blood cells do not contain a nucleus because their purpose is to carry oxygen around the body. Due to the fact these cells do not have a nucleus, their capacity to carry this oxygen is increased greatly.</span>
The placenta provides oxygen to the baby and excretes carbon dioxide into your bloodstream.
meaning that the baby does not simply absorb oxygen from a women's bloodstream. blood and gas transports occur through the placenta, also the placenta delivers oxygen-rich blood through the umbilical vein not artery
hope this helps
