Electric field lines about a tiny charged particle extend
A. in circles.
B. outward when the charge is negative.
C. outward when the charge is positive.
D. none of the above
Answer: C
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Describe the seafloor spreading hypothesis.
What will be an ideal response?
Removal of which of the following species will always result in the greatest changes in an ecological system?
A) a decomposer species B) a producer species C) a carnivore species D) a competitive species E) a keystone species
?Match the term with the most appropriate description.
A. ?bottom-dwellers B. e?distribution of many aquatic organisms is determined by this C. ?includes many types of algae D. ?cloudiness caused by nutrient overloads E. ?strongly swimming consumers
Marble is metamorphosed limestone
Indicate whether the statement is true or false