Mitochondria have how many membranes?
A) 0
B) 1
C) 2
D) 4
C
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When the speed of a horizontally-moving projectile near Earth's surface is 8 km/s
A. it is an Earth satellite. B. it has a circular trajectory about Earth's center. C. its trajectory matches the curve of Earth. D. all of the above
Many larger rivers in the Colorado Plateau region meander in deep, narrow canyons and have no floodplains. How could this happen?
A) Original, youthful streams continued to downcut as the land rose. B) As sea level dropped, the original youthful streams matured into old-age streams. C) As sea level rose, the original, old age streams were rejuvenated. D) Original, old age streams downcut as the land gradually rose.
It is impossible to deal with something as large and diverse as our planet without an organizing framework. Sectioning the earth into regions is a common approach, especially in a World Geography or World Regional Geography course
Indicate whether the statement is true or false
All of the following factors are thought to contribute to colony collapse disorder EXCEPT ________
A) abnormally harsh winters B) loss of habitat such as prairie C) the use of Roundup to kill weeds D) parasites and pathogens E) the use of insecticides