7th grade Ch. 16 Science vocab

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Across
  1. 4. male gametes
  2. 5. a sperm joins with an egg in a reproductive process
  3. 6. is the amount of energy it takes to raise the temperature of 1 kg of water by 1 degree celsius
  4. 8. are basic units of the nervous system
  5. 12. human reproductive cells
  6. 13. The resistance to specific pathogens, or disease-causing agents
  7. 14. organ systems that work together and maintain steady internal conditions when external conditions change
  8. 17. is a type of white blood cell that is made in the thymus, the spleen, or tissue
Down
  1. 1. the cell that forms when a sperm cell fertilizes an egg cell
  2. 2. are the parts of food used by the body to grow and survive
  3. 3. is the process by which new organisms are produced
  4. 7. system organs that work together and perform specific tasks
  5. 9. female gametes
  6. 10. chemical released by the organs of the endocrine system
  7. 11. bone is the hard outer layer of tissue
  8. 15. bone is the interior region that contains many tiny holes
  9. 16. automatic movements in response to a signal