This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
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Here are the completed paragraphs and the labeled diagram: For Questions 1 to 11, complete the following paragraphs. The skin has two main layers. The outer, waterproof, layer is the (1) epidermis with the (2) dermis underneath. This lower layer contains (3) nerve endings, follicles, (4) sweat glands, tiny blood vessels called (5) capillaries and a pigment called (6) melanin which protects us from ultra violet rays. The skin has many useful functions. It helps to control body (7) temperature, it keeps out (8) germs, it (9) protects the delicate tissues underneath, it (10) heals itself when damaged and it is (11) water proof. For Questions 12 to 15, label the diagram below. 12. Kidney 13. Ureter 14. Bladder 15. Urethra