Which of the following is not part of the lichen association?
A. Brown algae
B. Ascomycetes
C. Green algae
D. Cyanobacteria
Answer: A
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Which of the following definitions is
CORRECT?
a. A community refers to interaction between populations and their environment. b. A community refers to interaction between species and their environment. c. A community refers to the area in which different species live. d. A community refers to all species that live and interact in a specific area. e. None of these are correct
If pregnancy does not occur, ____
a. LH levels rapidly rise b. the corpus luteum degenerates c. estrogen and progesterone levels rise d. the endometrium thickens e. the luteal phase begins
A major fully reduced form of carbon, important in biogeochemical cycling is ________.
A. methane B. hydrogen sulfide C. carbon dioxide D. carbohydrate
One hypothesis on the origin of mad cow disease in cattle concerns
a) cattle feed contaminated with scrapie. b) direct contact with animals infected with scrapie. c) direct contact with other infected species. d) hormones in cattle feed.