Answer:
B
Explanation:
Hence When we eat food it closes but when we talk While eating the epiglottis would remain open and the food may enter windpipe which may trigger violent coughing to clear the food material out of trachea or may get serious by Chocking and may be fatal. That is why it is not advised to talk while eating
They determine the north and south ends
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Following spdf notation, the electron configuration for Nobelium (No) is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 5s2 5p6 4f14 5d10 6s2 6p6 5f14 6d0 7s2
Vitamins are organic substances because you get your vitamin D from the sun and the sun is not artificial is it. So that is false
ANSWER: B) False
EXPLANATION: Natural selection occurs amongst variation. Clones are all identical