My Crossword Maker Logo
Powered by BrightSprout
Save Status:
or to save your progress. The page will not refresh.
Controls:
SPACEBAR SWITCHES TYPING DIRECTION
Answer Key:
Edit a Copy:
Make Your Own:
Crucigrama Sopa de Letras Hoja de Trabajo
Calificar este Puzzle:
Log in or sign up to rate this puzzle.

How Animals Stay Alive

Horizontales
Animal that eats other animals.
Message that travels along nerve cells.
Work together.
Give off.
Chemical signal released by a nerve cell.
Organ of excretion.
Animal that eats plants.
Where food is stored in some animals.
Grinds food into a watery paste.
The _____ is the largest part of the brain.
Verticales
Chemical signal produced by glands.
Blood remains inside vessels at all times in a ______ circulatory system.
The ______ nervous system is comprised of nerves that send messages between the central nervous system and other body parts.
The ______ nervous system is made up of the brain and spinal cord.
Take in oxygen and give off carbon dioxide.
Movement of materials from high to low concentration.
Flowing in a circle.
Blood makes direct contact with cells in a(n) ______ circulatory system.
The chamber that receives blood that returns to the heart.
Material that is not digested leaves the digestive tract through an opening called the _____.
Pumps blood out of heart.
To get rid of wastes.