What is the name for an association of fish that exhibit behaviors for social reasons?
a. Synchronization
b. Shoaling
c. Catadromous
d. Anadromous
b
Biology & Microbiology
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In the United States, what fraction of fresh
water taken from the environment is used to irrigate agricultural fields? a. 0. b. 20. c. 40. d. 60. e. 80
Biology & Microbiology
Which biomolecule is most associated with the structure and function of cell membranes?
a. Polysaccharides b. steroids c. DNA d. phospholipids e. ATP
Biology & Microbiology
Which immune system protects the body from its own cancerous cells?
A) cell-mediated immune system B) antibody-mediated immune system C) enzyme immune system D) inflammatory immune system
Biology & Microbiology
The protist characterized by a silica shell and thread-like pseudopods is a(n)
A) alveolate. B) euglenid. C) excavate. D) foraminiferan. E) radiolarian.
Biology & Microbiology