Which of the following can be used as a fungal growth inhibitor?
A) calcium propionate
B) sodium benzoate
C) both a and b
D) neither a nor b
C
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Which of the following statements is untrue?
A. Covalent molecules can have nonbonding electrons. B. Covalent bonds can involve more than one pair of electrons. C. Covalent molecules usually have low melting points. D. Covalent molecules are never crystalline. E. All of the above statements are true.
The transfer of heat from molecule to molecule within a substance is called ____
A) conduction B) convection C) radiation D) latent energy
Describe North America's major landform regions and climates, and suggest ways in which the region's physical setting has shaped patterns of human settlement
What will be an ideal response?
A volcano that has not erupted for over 10,000 years is not considered to be an active threat
a. True b. False