Which of the following has tentacles up 60 meters long?
A) Cnidarians
B) Coccolithophores
C) Ctenophores
D) Foraminifers
E) Radiolarians
A
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Which of the following factors indicates a high risk for volcanic mudflows or lahars?
A) A shield volcano that forms a low mountain in the tropics B) A volcano whose hillslopes are covered with hard basaltic lava C) A volcano with a thick covering of snow or ice D) All of these are correct.
A positive-feedback mechanism tends to produce results that are opposite of the initial change and tend to offset it
Indicate whether the statement is true or false
Which of the following an example of an equilibrium situation?
A) an unsaturated solution B) a saturated solution C) a supersaturated solution D) all of the above
Icebergs are created:
a. by freezing of sea water. b. through ablation. c. by plucking. d. when a glacier flows into the ocean. e. by abrasion.