The idea that older, more stable habitats have greater species richness than habitats subjected to
frequent, widespread disturbances is known as:
a. natural selection.
b. the time hypothesis.
c. island biogeography.
d. the theory of community stability.
e. the disturbance hypothesis.
B
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Which of the following is NOT a countermeasure of bacteria trying to escape host immune responses?
A) Catalase production B) Siderophore production C) Antioxidant production D) Leukocidin production E) Capsule production
Which of the following type of organism is most likely an autotroph?
A. caribou B. lion C. human D. tree E. parasite
A capillary tube is used to acquire a small blood sample for CBC (complete blood count) analysis. Suction is not required to transfer the blood from the fingertip prick to the tube in part due to
A. covalent bonding between the water molecules. B. adhesive forces between the water molecules and the glass particles of the tube. C. ionic bonding between the water molecules. D. cohesive forces between the glass particles of the tube and the water molecules.
Endemic species tend to have all of the following characteristics EXCEPT ____
a. high specific habitat requirements b. low dispersal ability c. restricted geographic distributions d. high specific dietary requirements e. high charisma to motivate conservationists