Biology Final project

1. so small it can only be seen with a microscope
7. designed for people to live in.
8. of great value.
9. cause to pass from one place to another.
11. to emerge from an egg.
12. designed for people to live in.
14. the chemical in hot peppers that creates a burning sensation in the mouth.
16. keep safe
18. able to adjust to new conditions.
19. the bones that make up a backbone.
21. very small.
22. the central part of something.
25. a person who offers to do a task.

2. required; not voluntary.
3. a scent used by animals to communicate.
4. not exact or accurate; estimated.
5. of, on, or relating to Earth.
6. light emitted by some substances after they are exposed to light.
10. a nerve cell.
13. to get smaller or more compact.
15. animals that begin life in the water before growing into a terrestrial adult.
17. a unit apart or by itself;cause to be apart.
20. be full of or swarming with.
23. able to be used for a practical purpose.
24. a split in the surface of something.