Answer:
People giving antibiotics to food animals are required to follow a "withdrawal time" after treatment. The withdrawal time is a waiting period after treatment that gives the animal time to reduce the concentration of the drug in its body, and therefore in the meat (or milk or eggs) the animal produces.
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Cell membrane (that wraps around the cell doing so)
The atmosphere also protects living things on Earth from the sun's harmful ultraviolet radiation. A thin layer of gas called ozone high up in the atmosphere filters out these dangerous rays. The atmosphere also helps to sustain life of Earth.
<span>In a neuron, the dendrite is the part that receives the signal and sends the message to the cell body. The signal may come from a sensory receptor or from the axon of another neuron or set of neurons.</span>