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
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.
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