Problem 1
Fill in the blank with the correct word or words. A change in the hereditary features of a species over a long period is ___________.
Problem 3
Fill in the blank with the correct word or words. The largest subdivision of geologic time is the ___________.
Problem 4
Fill in the blank with the correct word or words. The process by which the best-suited individuals survive in their environment is ___________.
Problem 4
When did dinosaurs roam Earth? A. Precambrian time B. Paleozoic Era C. Mesozoic Era D. Cenozoic Era
Problem 5
Fill in the blank with the correct word or words. A group of individuals that normally breed only among themselves is a \((n)\) ___________.
Problem 5
What is the name of the supercontinent that formed at the end of the Paleozoic Era? A. Gondwanaland B. Eurasia C. Laurasia D. Pangaea
Problem 6
During which geologic period did modern humans evolve? A. Quaternary B. Triassic C. Ordovician D. Tertiary
Problem 7
What is the process by which better-suited organisms survive and reproduce? A) endangerment C) gymnosperm B) extinction D) natural selection
Problem 7
How many body lobes did trilobites have? A. one C. three B. two D. four
Problem 8
During what period did the most recent ice age occur? A) Pennsylvanian C) Tertiary B) Triassic D) Quaternary
