All of the following illustrate the relationship of mutualism except
a. oxpeckers and black rhinoceros
b. Epiphytes
c. clownfish and sea anemone
d. bacteria in the digestive system of animals
e. flowering plants and insects
B
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How many times did the Earth's magnetic field switch from north to south in the last 10 million years?
A. never B. seldom-less than 5 times C. many-more than 20 times
Which rule applies to surface water rights in the western U.S., where surface is less abundant?
A. Doctrine of Prior Appropriation B. Riparian Doctrine C. Rule of Capture D. Rule of Reasonable Use
The diagram below shows data from a single earthquake plotted on a diagram that shows the mathematical relationship between distance, magnitude, and S-wave amplitude. What do these data show?
A. The distance between stations WUAZ and DUG is 680 km. B. The local magnitude of the earthquake recorded by these three stations is 4.1 MI. C. Station DUG was closest to the earthquake. D. Station ISCO is 22 km from the earthquake epicenter.
The causes of the current (sixth) mass extinction include all of the following except ________
A) pollution from pesticides, eutrophication, and other causes B) habitat alteration and destruction C) earthquakes, tsunamis, and forest fires D) global climate change E) invasive exotic species