Question

vertebrates invertebrates a. with backbones
b. dog
c. crocodile
d. 90% of animals on earth
e. starfish
f. worms
g. grow
h. living thing
i. no backbones
j. can reproduce
k.sponges
l. eagle
m. 10% of the earth

Answer 1

Answer:

The absence of a backbone is the main trait that distinguishes invertebrates from vertebrates, or animals that have backbones. Apart from the absence of a backbone, however, invertebrate groups have little in common with each other; rather, they make up a highly diverse and largely unrelated group of animals.

Answer 2

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