How to classify animals?

"classify" means

• to divide things into groups according to type

• to divide things into groups according to your hobby

We ___________ our books by subject.

• classify

• classifies

• classification

• class

"backbone" means

• xương sống

• xương cùi chỏ

• xương cụt

• xương chậu

Which animals below have backbone?

• human

• tuna

• dog

• peacock

Animals with backbones are called ______.

• vertebrates

• verterbrates

• vetebrates

________ have hair or fur on their bodies, and they give birth to their young alive.

• mammals

• mama

• mamals

Which animals below are mammals?

• bee

• bear

• whale

• worm

Which animals below are insects?

• jellyfish

• bee

• ant

• eagle

Which animals below are invertebrates?

• squid

• shrimp

• snail

• claw

What is an "exoskeleton"?

• an outer covering of an invertebrate which helps hold the bodies and protect the animal

• a shield of an invertebrate which helps hold the bodies and protect the animal

• hair of fur of an invertebrate which helps hold the bodies and protect the animal