Across
- 3. What type cycle takes about 28 days and has 3 parts.
- 6. A type of white blood cells that is made in the thymus, the spleen, or the body.
- 8. ___________ helps sperm change from round cells to long, slender cells that can swim.
- 10. What is the process when new organisms are produced.
- 11. A ______ is the amount of energy it takes to raise the temperature of 1kg water by 1°C.
- 12. _________ are disease-causing agents, such as bacteria and viruses.
Down
- 1. _______ is cell division that forms 2 genetically identical cells.
- 2. What is the process of heating food to a temperature that kills the most harmful bacteria.
- 4. What lives in almost every habitat on Earth,including the air, glaciers, the ocean, and in soil.
- 5. The ______ develops into a fetus, the last stage before birth.
- 6. What removes the wastes from the blood.
- 7. Your body produced antibodies in response to an antigen in active _______.
- 9. What are the chemical signals released by the organs of the endocrine system.