A species goes extinct without any clear, single cause. 

A. hotspot
B. habitat loss
C. edge effects
D. megafaunal extinction
E. extinction vortex


E. extinction vortex

Biology & Microbiology

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The normal flora of the adult large bowel consists predominantly of:

a. anaerobic species. b. Staphylococcus. c. Enterococcus. d. Enterobacteriaceae.

Biology & Microbiology

Which turtle has a diet of seagrass?

a. Kemp's ridley b. Leatherback c. Hawksbill d. Green sea turtle e. Loggerhead

Biology & Microbiology

Refer to the accompanying figure. Secretion of potassium and ammonium ions occurs mainly in the portion labeled as:


a. 2.
b. 5.
c. 7.
d. 9.
e. 10.

Biology & Microbiology

The apple host race (or biotype) of the Rhagoletis pomonella fruit flies evolved after non-native apples were colonized by individuals of R. pomonella's hawthorn race (hawthorn is the original native host of R. pomo-nella)

If the two host races should become two different species over time, would this case represent an example for cospeciation? Briefly justify your answer. What will be an ideal response?

Biology & Microbiology