It is a complex network of nerves and cells that carry messages to

and from the brain and spinal cord to various parts of the body.

It is made up of nerves that branch off from the

spinal cord and extend to all parts of the body.

It is made up of the brain and spinal cord.

The purpose of the nervous system is...

• Complex network of nerves and cells.

• Controlling your movements, thoughts and automatic responses.

• Technique used by bats.

• Paleozoic

Study the materials, processes, products, physical nature, and history of

the Earth.

It is a technique used by bats, dolphins and other animals to determine the

location of objects using reflected sound.

This is an era of our planet.

• Echolocation

• Paleozoic

• Nectar

• Ecosystem

It is a sweet liquid produced by plants.

It is the act of transferring pollen grains from the male anther of a flower to

the female stigma.

It is an area of land that receives no more than 25 centimeters (10 inches) of

precipitation a year.