Which of the following nutrients is responsible for eutrophication in the Gulf of Mexico?
A. nitrogen
B. phosphorous
C. carbon
D. oxygen
E. water
A
You might also like to view...
Glycerol forms the backbone of ____
a. triglycerides only b. polysaccharides and nucleic acids c. nucleic acids only d. polypeptides only e. triglycerides and phospholipids
In general, birds increase the chance their young will survive by
a. providing parental care of the young. b. selecting nesting sites away from predators. c. being oviparous. d. both a and b e. both b and c.
Refer to the accompanying figure. The portion of the molecule labeled as 5 is:
a. the attached amino acid.
b. a double-stranded DNA region.
c. a single-stranded DNA region.
d. the anticodon.
e. the codon.
The key element in catabolic reactions is that they ________
a. release energy b. are irreversible c. require different amounts of energy to proceed d. cause digestive enzymes to be released e. are condensation reactions