Which well-known paleontologist created a global database of marine animal families to study changes in diversity through time?
A) Charles D. Walcott
B) Jere H. Lipps
C) David Raup
D) Michael Foote
E) Jack Sepkoski
E
You might also like to view...
The exoskeleton of insects is composed mainly of what material?
A. chitin B. calcium carbonate C. hydroxyapatite D. collagen E. waxes
The health effects of X-rays on a fetus depend on the amount of ____________________ and the ____________________ of the fetus
Fill in the blank(s) with correct word
Which of the following is a true statement about growth in plants?
a. Only primary growth is localized at meristems. b. Some plants lack secondary growth. c. Only stems have secondary growth. d. Only secondary growth produces reproductive structures. e. Monocots have only primary growth, and eudicots have only secondary growth.
If 20% of nucleotides in the DNA of a particular organism contain thymine, estimate the percentage of cytosine that is present in the DNA.
A. 80% B. 30% C. 20% D. 40% E. 15%