1) How many respiratory systems do human have. a) 7 b) 10 c) 19 d) 100 e) 40 f) 30000 2) How many bones does adult have. a) 100 b) 1 c) 206 d) 15 e) 11 f) 200 3) Can you identify a tissue in human body. a) b) c) d) e) f) 4) The meaning of skeleton. a) making juice b) blending c) the shape of  the objects. d) the supporting framework, basic structure, or essential part of something. 5) what makes plant green. a) nose b) house c) sun d) chlorophyll 6) Are plant and animal cell the same. a) no b) yes c) maybe 7) How many gases are there. a) moon,sun and stars b) solid,gas and liquid c) human,hippopotamus and heart

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