Adaptations that have enabled vertebrates to survive on land include all of the following EXCEPT
A. a water-resistant epidermis
B. development of a bony skeleton
C. development of longs
D. external fertilization
E. embryos enclosed within membranes
Ans: D. external fertilization
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Deforestation in the boreal forests is due primarily to:
a. commercial logging for rare woods to be used in furniture. b. commercial logging subsistance agriculture. c. clear-cut logging for industrial wood. d. slash-and-burn agriculture for farming e. slash-and-burn agriculture for cattle ranching
Nuclear division in which the chromosome number is reduced from 2n to n is part of the lifecycle of all of the following organisms except
A. Molds B. Ferns C. Insects D. Bacteria E. Protozoans
A nonphotosynthetic plant sharing a mycorrhizal fungus with a photosynthetic plant is best described as a(n)
A. host. B. parasite. C. epiparasite. D. mutualist. E. symbiont.
The lacrimals glands constantly produce__________
Fill in the blank(s) with the appropriate word(s).