When runoff containing excessive nutrients enters streams and lakes it can result in an overgrowth of cyanobacteria and algae, a process known as
A) eutrophication.
B) oxidation.
C) fixation.
D) ammonification.
E) both ammonification and fixation.
A
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When cells of a facultative anaerobe such as Paracoccus denitrificans are growing under anaerobic conditions and using nitrate as the terminal electron acceptor, ________ nitrate reduction is occurring.
Fill in the blank(s) with the appropriate word(s).
The gut cavity may be a fully lined coelom or a partially lined __________. Fill in the blank(s) with the appropriate word(s)
Whales use sound to
a. communicate. b. locate food. c. map out their surroundings. d. communicate and map out their surroundings. e. do all of these.
Most of the skin's resident flora is found in the uppermost, superficial layers of the epidermis.
Answer the following statement true (T) or false (F)