Most tropical reefs form in areas with low wave energy so they are not crushed by the force. Indicate whether the statement is true or false
ANS: F
Tropical coral reefs mainly form in areas of high wave energy. This allows the corals to receive
nutrients in the water first. Information can be found in the section Examples of Marine Communities.
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How would you classify the following material? milk
A) a suspension
B) a heterogeneous mixture
C) a solution
D) an element
E) a compound
Plate tectonics explains past processes that shaped Earth but not present-day processes.
Answer the following statement true (T) or false (F)
The swim bladder of a fish ________.
A. is filled with oxygen B. allows it to move rapidly between depths C. keeps the fish neutrally buoyant D. All of these are correct. E. None of these is correct.
Magnetic iron-bearing minerals that crystallize out of magma ____.
a. align themselves with the Earth's magnetic field and only record direction b. record the strength of the Earth's magnetic fields c. become easily altered and lose their magnetic properties d. record both direction and strength of the Earth's magnetic field at time of crystallization e. none of these