From a biodiversity standpoint, which of these is a serious threat posed by plastic shopping bags?
A. They can be ingested by birds and animals.
B. They can easily blow away and cover tree limbs.
C. They don't degrade in landfills.
D. They can get in water lines and block drains.
Answer: A
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Fill in the blanks with correct word
A sandbag is motionless in outer space. A second sandbag with three times the mass moving at 12 m/s collides with it. They both stick together, and move at a speed of
A) 3 m/s. B) 4 m/s. C) 6 m/s. D) 8 m/s. E) none of the above
Which of the following desert landforms is carved from solid rock rather than consisting of accumulated sediments?
A) Playa B) Inselberg C) Alluvial fan D) Bajada
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A) Holoplankton B) Photoplankton C) Phytoplankton D) Synthoplankton E) Zooplankton