HOL 3

Question 1

Paleozoic when did it begin?

Answer 1

The Paleozoic Era is the first of three geological eras of the Phanerozoic Eon. Beginning 538.8 million years ago, it succeeds the Neoproterozoic and ends 251.9 Ma at the start of the Mesozoic Era

Question 2

What did Predation favor?

Answer 2

the coevolution of better mobility and more complex sensory systems

Question 3

What were the first vertebrates

Answer 3

In the Cambrian period,
one animal group called fish
had evolved an internal
skeleton making them the
first vertebrates

Question 4

gymnosperms

Answer 4

Plants that carry seeds

Question 5

What are Phylum Arthropoda?

Answer 5

The phylum Arthropoda contains a wide diversity of animals with hard exoskeletons and jointed appendages.

Question 6

What did amphibians evolve from?

Answer 6

During the Devonian period, about 350 million years ago, early amphibians evolved from lobe finned fish