Test every 3 years
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Answer: cellulose gives cell walls of plants their rigid structure
Answer:
Genes are the instructions inside each of your cells. They control how you look and how your body works. Since everyone has slightly different genes, everyone has a different set of instructions. Genes are one reason why you are unique!
Explanation:
Answer:
Lucy Dupre is having bone problem because her body lack Vitamin D.
Explanation:Although Vitamin D is unnatural,your body needs it.