By the_________ period, large tropical swamps extended across North America, eventually becoming the vast coal deposits of today.
A) Cambrian
B) Triassic
C) Pennsylvanian
D) Devonian
E) Silurian
Correct Answer:
Verified
Q33: Each continent contains large "core areas" of
Q34: The_ era is known as the "age
Q35: By the close of the Paleozoic, all
Q36: Mammals became the dominant land animals during
Q37: One group of reptiles, exemplified by the
Q39: Abundant fossil evidence did not appear in
Q40: Which era is sometimes called the "age
Q42: During the early Paleozoic era, the current
Q91: Many of the most ancient fossils are
Q122: Bacteria that thrive in oxygen free environments
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents