A. category 1
Earthworms are invertebrates, so they belong in Category 2.
While Mikey was at the zoo, he classified the animals as he walked by their exhibits. Category 1 is for vertebrates, which are animals with a backbone. Category 2 is for invertebrates, which are animals without a backbone. The table Mikey made is shown below.
Category 1 Category 2
cat snail
mouse jellyfish
dolphin sponge
The last animal that Mikey needs to categorize is a earthworm. Into which category does it belong?
A.
category 1
B.
both categories
C.
category 2
D.
neither category
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