The sail-like fin on the backs of the pelycosaur did NOT function as a ____
a. sexual display
b. means of locomotion
c. means of protection
d. means to look more ferocious
e. thermoregulatory structure
b
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Which of the following is the main reason why vegetables take longer to cook in boiling water at high altitudes?
A. The temperature of the boiling water decreases with increasing altitude. B. Saturation vapour pressure decreases with increasing altitude. C. Water boils at a higher temperature at higher altitudes. D. There is less oxygen in the air at high altitudes.
An immigrant from Africa to the United States, learning to speak English, is going through the process of:
A. acculturation. B. immigration. C. ethnocentrism. D. migration.
In Massachusetts and other states, closed landfills are for the first time being used for
A) producing electricity by incinerating solid wastes. B) generating electricity from acres of photocells covering the landfill surface. C) extraction of recyclable materials. D) disposal of radioactive waste from nuclear power plants.
Which of the following is not part of the definition of a mineral?
A) Naturally occurring B) Organic C) Orderly crystalline structure D) Definite chemical composition