Mutualism is ________
A) a relationship between two species in which only one benefits
B) a relationship between a beneficial predator and its prey
C) a relationship with no benefits to either species
D) a relationship between two species in which both benefit
E) a relationship in which two species have a mutual predator
Answer: D
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Which of the following statements best describes how this object may have formed?
A. A supernova exploded, probably from the late-stage evolution of a high-mass star. B. Interstellar gas and dust accumulated due to gravity. Some pockets had enough mass to cause star formation. C. Material accumulated into a sphere because of gravity, and it underwent nuclear fusion of hydrogen. D. A star ejected its outer envelope of gas and plasma.
Compare and contrast the effects of ozone in the stratosphere and troposphere.
What will be an ideal response?
Which of the following materials is NOT produced by erupting volcanoes?
A. sandstone B. ash C. basaltic lava D. obsidian/glass
A geologist is looking at deposits along a river below a large volcano. She finds large boulders mixed with sand and mud, and all of the material is comprised of volcanic rocks, particularly the mud which is volcanic ash
She quickly realizes these deposits represent an ancient ________. A) lahar B) earthflow C) rock avalanche D) slump