Calcium and ____ are the body 's most abundant minerals and are components of teeth and bones
a. potassium
b. phosphorus
c. sulfur
d. sodium
e. chlorine
b
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Decomposers are vital components of a food web because they:
A. incorporate the carbon contained in atmospheric CO2 into C6H12O6. B. immediately provide tertiary consumers with usable forms of carbon. C. serve as primary producers. D. return carbon (as CO2) to the atmosphere.
Which evolutionary line is the one leading to the Zygomycota?
1.A
2.B
3.C
4.D
5.E
Exocrine glands:a
have a duct. b. cannot secrete mucus. c. are made of endothelial tissue. d. secrete hormones. e. transport products through interstitial fluid.
Pentamidine is an example of an antimicrobial
A) used to treat bacterial infections. B) effective against helminths. C) used to treat viral infections. D) effective against eukaryotes, especially protozoa. E) used to treat both bacterial and fungal infections.