A about 7 months b about 9 months c about 10 months d

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A. about 7 months B. about 9 months C. about 10 months D. about 1 year _____________8. Which of these is a change observed among boys during puberty? A. Voice changes in pitch B. Color of skin changes
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C. Breasts become bigger D. Hips become wider _____________9. When a women becomes pregnant, what does she start to have in her womb? A. a new egg cell B. a fertilized egg C. a mature egg cell D. a very young egg _____________10. Which is the order of development of a fertilized egg in a pregnant woman’s womb? A. zygote-fetus-embryo B. zygote-embryo-fetus C. fetus-zygote-embryo D. fetus-embryo-zygote II. TRUE OR FALSE DIRECTIONS: Write TRUE if the statement is true and FALSE if the statement is false. Write your answer on the space provided. _____________1. Respiration is the process by which the cells in the body receive oxygen and give off carbon dioxide. _____________2. The first stage of respiration is the external respiration. _____________3. The third stage of respiration is the internal respiration. _____________4. When oxygen is received by the blood and goes to the other cells of the body, therefore it is called internal respiration. _____________5. The main parts of the respiratory system are the nose, pharynx, larynx, trachea and lungs.
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