When humans are cold, they often shiver. Shivering increases their ________, thereby warming their bodies

A) metabolic heat production
B) layer of insulation
C) circulatory adaptation
D) evaporative cooling


Answer: A

Biology & Microbiology

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Each species has a unique set of ecological requirements and roles that is referred to as its ecological ____

a. habitat b. community c. requirements d. necessities e. niche

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All fungi are _____

a. unicellular b. multi-cellular c. autotrophic d. heterotrophic e. photosynthetic

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Lobsters and clams have _____ in common with fishes

a. external gills b. a two-chambered heart c. internal gills d. skin as a respiratory surface e. an open circulatory system

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If water were nonpolar it would not form hydrogen bonds. At normal room temperatures this nonpolar water would be ________. 

A. a liquid B. a gas C. a solid

Biology & Microbiology