Evolution

In room six we have been learning to classify animals.  Scientists classify animals into groups in order to easily identify, sort, and name them.

Classify = SORT
there are many ways to group living things.  one way is according to how they use their food for energy.  You can classify animals into two main groups.  Vertebrate or invertebrate.
All vertebrates have...

• covering of skin that protects them
• Skeleton inside their body
• Muscles that help them move
• Blood moves through tubes
• Lungs or gills for breathing

Invertebrates

• 90% of animals are invertebrates!
• Invertebrates tend to be small because they don't have a backbone.
• Many live in the ocean because the water helps support their weight.
• Some have a hard covering or shell on the outside of their body for protection - insects, spiders, crabs, snails, clams.