Life-forms that existed during the paleozoic era included

a. fish

b. trilobites

c. reptiles

d. all of the above

D all of the above is the correct answer. Hope this helps. <333

I believe that the correct answer is d. All of the above

hope this helps

have a good day

C.J

i believe it would cause an increase of percipitation, though i could be wrong. so i would say b is the answer.