During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses. The chromatin coils and becomes increasingly compact, resulting in the formation of visible chromosomes. Chromosomes are made of a single piece of DNA that is highly organized.
The DNA has to replicate before mitosis to keep the number of chromosomes consistent. Hope this helps.
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That our actions don't affect just us. Our actions can affect others around us and then those people around them and so on, thus, "The Butterfly Affect".
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You should never take shelter under a tree when lightening. You should get away from the tree and get as low down to the ground as possible. You do not always have enough time to get to a building so it depends on your surroundings/situation.
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Hope this helps!
Bone Marrow is tissue in the hollow centers of our bones, it has stem cells which produce our blood cells. It also produces red blood cells that give oxygen to the whole body. Hope this helped : )
