Which part of the human body would be highly affected by a nuclear radiation first? Describe poison dart frog behaviour in regards to poisonous skin. Which spider is the deadliest to humans? What would be the e
Another reason why some older people shrink is because of osteoporosis (骨质疏松).Osteoporosis occurs when bone is broken down and not enough new bone material is made.Over time,bone is said to be lost.Bones become smaller and weaker and can easily break if someone with o...
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