What is a way humans try to stop beach erosion?
What will be an ideal response?
Answer: By building groins, which are walls built perpendicular to the shoreline, and trap sediment on the upcurrent side to widen a beach. The longshore current erodes the beach, however, on the downcurrent side of the groin.
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How long does it take for many plastics to decompose?
a. 50 years b. 100 years c. 250 years d. 400 years
Which one of the following best illustrates an ecological landscape?
A) A pond and all of the living organisms within it B) The animals, plants, and bacteria living in the Mississippi River C) A large open prairie with bison grazing on grasses and insects visiting the flowers D) A river flowing past fields and forests in Yellowstone National Park
How does "space weather" affect you?
A. It causes electrical surges that can disrupt power systems. B. It causes the Earth's magnetic field to form and permits navigation. C. It causes moving air and clouds on Earth that causes weather systems.
How does an enhancer stimulate transcription?
A) It brings more nucleotides to the site transcription site. B) It brings more tRNA to the transcription site. C) It binds to regions of DNA far removed from the transcription site and then binds to the transcription site. D) None of these is correct.