energy

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Across
  1. 4. a type of motion that occurs when matter moves quickly back and forth or up and down in
  2. 6. (verb) to detect information about an environment by using external structures containing receptors specialized to receive particular types of information
  3. 7. a part of the animal’s body that serves a specific purpose
  4. 8. the purpose of a structure to help an organism survive, grow, or reproduce
  5. 9. a regular pattern of motion that transfers energy across a distance
Down
  1. 1. simple, automatic response to something that happens
  2. 2. the height of a wave, measure from the still water line to the wave’s peak
  3. 3. a behavior, often complex, that an animal performs without being taught
  4. 5. a behavior that results from sensing information about an environment