Habitat fragmentation can reduce biodiversity by ____.
A. withdrawing an essential resource from native species
B. sterilizing for pollution control
C. eliminating vast tracts of forests
D. introducing more native species into a habitat
E. decreasing human use of natural resources
Answer: A
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What causes antigenic variation?
A. gene mutation B. differential gene expression C. genetic rearrangement D. All of the answer options are correct.
Which is NOT true of prokaryotes?
A) They contain ribosomes. B) Their cells contain a true nucleus. C) Their genes contain exons. D) They include bacteria. E) They are single-celled organisms.
Figure 36.6
Use the figure above to answer the following question.
?
The anatomical structure identified with the letter "R" in the figure above is the ____.
A. pericardium B. cardiac muscle C. inferior vena cava D. right atrium E. heart apex
All of the following are recommended to reduce risk of early childhood caries EXCEPT
Select one: a. wean from bottle to cup by 1 year of age. b. avoid putting infants to bed with a bottle. c. avoid providing juice in a bottle. d. allow children to drink continuously from sippy cups throughout the day.