Which of the following coastal engineering structures is built perpendicular to the shoreline?
A. seawall
B. groin
C. artificial dune
D. breakwater
E. None of these is correct.
Answer: B
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reflection of solar energy optical phenomena such as a red sky at sunset condensation and cloud formation all of these
What is the single greatest advancement in tools used for observing tropical cyclones?
A) radar B) aircraft reconnaissance C) data buoys D) meteorological satellites
Plate tectonics emerged as a science in the 1960s, and was based on the earlier hypothesis of ________.
A. planetesimals B. evolution C. nebular formation D. continental drift E. electromagnetism
How does an atom become a positive or a negative ion?
a) An atom becomes a positive ion by losing an electron; it becomes a negative ion by gaining an electron. b) An atom becomes a positive ion by gaining a proton; it becomes a negative ion by losing a proton. c)An atom becomes a positive ion by losing a neutron; it becomes a negative ion by gaining an electron. d) An atom becomes a positive ion by gaining an electron; it becomes a negative ion by losing an electron. e) An atom becomes a positive ion by gaining a proton; it becomes a negative ion by gaining an electron.