The element(s) that have proven useful for stable isotope studies are
A) carbon.
B) nitrogen.
C) sulfur.
D) carbon, nitrogen, and sulfur.
Answer: D
Biology & Microbiology
You might also like to view...
Which superkingdom contains members that are responsible for forming red tides?
A. Amoebozoa B. Archaeplastida C. Stramenopila D. Alveolata E. Excavata
Biology & Microbiology
Which of the following phrases INCORRECTLY finishes the following statement regarding morphogen distribution? Morphogen distribution inside the cell
A. is homogeneous. B. can be established prior to fertilization of the oocyte. C. can arise due to localized secretion by neighboring cells. D. is dependent on CAMs. E. is neither homogeneous nor dependent on CAMs.
Biology & Microbiology
The part of the human eye that contains the
photoreceptors is the
a. lens. b. pupil. c. cornea. d. sclera. e. retina
Biology & Microbiology