When a prey population dramatically decreases, the predator population will subsequently _______________
a. decrease, but very slowly over time
b. decrease dramatically as well
c. not change if it is a species with a long generation time
d. increase
b
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The structure that covers the opening to the trachea during swallowing, thereby preventing food from entering the air passageway, is the
A. epiglottis. B. cecum. C. rumen. D. uvula. E. soft palate.
Imagine that a section of heart muscle no longer has gap junctions. What do you think would be the result?
A. The ability of the heart muscle cells to contract would be severely compromised. B. The ability of the heart muscle cells to coordinate their contractions would be severely compromised. C. The effects would be minimal from this change. D. The ability of the heart muscle cells to reproduce would be severely compromised.
Which type of bond holds the two strands of DNA together?
a. ionic b. network c. polar covalent d. hydrogen e. non-polar covalent
The form and structure of terrestrial communities are defined more by the plants than the animals present
Indicate whether the statement is true or false