Most ocean ridges coincide with ________
A) continental plates
B) convergent plate boundaries
C) oceanic plates
D) transforming boundaries
E) divergent plate boundaries
E
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Which of the features labeled on this figure is a kettle?
A) A
B) B
C) C
D) D
E) E
Lead contamination may cause social problems in urban areas
Indicate whether the statement is true or false
The total amount of chemical energy produced by autotrophs, such as plants and phytoplankton, is called gross primary production. The energy that remains after plants use some of the gross primary production to fuel their own metabolism is known as ________.
A) secondary production B) positive primary production C) negative secondary production D) net primary production E) negative primary production
Solar, geothermal, and tidal energy are forms of ______.
Fill in the blank(s) with the appropriate word(s).