Absolute dating uses _____________ to estimate how old a fossil is
A. Structural features
B. Embryonic structures
C. Depth within rock layers
D. A molecular clock
E. Radioactive isotopes
E. Radioactive isotopes
Biology & Microbiology
You might also like to view...
Which of the following extraembryonic membranes encloses the embryo?
a. amnion b. chorion c. yolk sac d. allantois
Biology & Microbiology
What is the function of a polar body?
a. it directs sperm to the urethra b. it provides nourishment to the developing oocyte c. it serves as a nurse cell to spermatids d. it may become a functional oocyte e. it has no function
Biology & Microbiology
The primary plant organ for conducting photosynthesis is the
A. stoma. B. chlorophyll. C. leaf. D. bark. E. stem.
Biology & Microbiology
How many net ATP molecules are produced per molecule of glucose broken down during glycolysis?
a. one b. two c. four d. 36 e. 38
Biology & Microbiology