What do most deep water consumers depend on for survival?
A) The productivity of the water column above
B) Chemosynthetic productivity
C) The deep scattering layer of nutrients
D) Rift communities
A
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Where do coral reefs exist with sea mounts?
a) In polar latitudes b) In tropical latitudes c) In both polar and tropical latitudes
What is the modern explanation for what the ancient Chinese called "guest stars"?
A) They are meteorites. B) They are Nova or Supernova. C) They are planets. D) They are comets. E) None of the above.
Direct evidence of giant tsunami is found in ____
a. ?volcanic slump zones around Hawaiian volcanoes b. ?beach erosion on Pacific islands c. ?alternating layers of peat, sand, and mud containing saltwater plants d. ?reverse faults along subduction zones e. ?magnetic field patterns in sedimentary rock
How might you separate a mixture of sand and salt?
A. just add water B. heat the mixture until one of the components melts C. with tweezers and a magnifying glass D. Two of the above answers are reasonable.