The correct answer for 7 is A, the nucleus. This is because the nucleus houses all of the DNA. Sections of the DNA code for proteins are transcribed into mRNA and later translated into final protein units by ribosomes.
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when your kidneys get affected in a negative way waste products start to build up in your body. It can cause some breathing troubles, poor sleep, weakness in your body,etc.
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The ball will stop
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I don't know much about it.
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Annelids. Worms are the simplest bilaterian animals, and reveal the basic structure of the bilaterian nervous system in the most straightforward way. As an example, earthworms have dual nerve cords running along the length of the body and merging at the tail and the mouth.
I believe it is D. More African elephants today naturally lack tusks compared to the elephant populations 100 years ago, because big game hunters sought elephants for ivory.
