Specialist species have a ____________ niche breadth.
Fill in the blank(s) with the appropriate word(s).
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The bile salts _____
A) are enzymes B) are manufactured by the pancreas C) emulsify fats in the duodenum D) increase the efficiency of pepsin action E) are normally an ingredient of gastric juice
Which statement about microscopes is true?
a. Transmission electron microscopes show details of the internal structures of cells. b. Electron microscopes are best for viewing live cells because of high resolving power. c. Light microscopes require the use of stains which typically kill cells. d. Dissecting microscopes have a higher magnification than light microscopes.
The responsible management (use and conservation) of the earth's resources indefinitely is called ________
A) the maximum sustainable yield B) landscape ecology C) an environmental conservation trust D) sustainable development
Spiders and certain other arthropods which lack jaws or mandibles are placed in a subphylum called
A. blood suckers. B. chelicerates. C. Amandibulata. D. mandibulates. E. Agnathae.