Normal cells stop growing (reproducing) when enough cells are present. For example, if cells are being produced to repair a cut in the skin, new cells are no longer produced when there are enough cells present to fill the hole (when the repair work is done).
In contrast, cancer cells don’t stop growing when there are enough cells present. This continued growth often results in a tumor (a cluster of cancer cells) being formed.
Answer:
The answer is options a and c
Brain and spinal cord
Hope this helps.
<span>The location - he mouth of a canyon near phoenix, Arizona is </span>in an arid area, and the moderate <span>slope. So the site is <span>probably on an alluvial fan. The soils should be coarser near the mouth </span></span><span>of the canyon and <span>become finer away <span>from the <span>mouth. The soils m<span>ay be layered with </span></span></span></span></span>interbedded sediments including gravels, sands, silts and clays.
A star's apparent brightness<span> is its </span>brightness<span> seen from Earth. A star's </span>absolute brightness<span> is the </span>brightness<span> the star would have if it were at a standard distance from Earth
</span>so if your riding in a car at night and your passing some one on the road in there point of view your apparent brightness is lets say 10 and if your are farther a way your estimated brightness or star's absolute brightness would be 10.<span />