What surface feature is present on Earth above the rising limb of a mantle convection cell?
a. trench
b. spreading ridge
c. hot spot
d. continental mountain chain
e. volcanic island arc
b
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Prairie grasses experience grazing herbivores, wildfires, droughts, deep snow, and blazing hot days in the summer
The prairie grasses alive today are descendants of those that have survived these challenges and thus must have ________ for such an environment. A) endemism B) predation C) speciations D) adaptations
Which of the following is the correct expression for Keq of water?
A) [H3O+][OH-]/[H2O] B) [H2O]/[ H3O+][OH-] C) [H3O+][OH-]/[H2O]2 D) [H3O+][OH-]
A habitat consists of
A) the source of energy that a species acquires. B) the position of a species on the food chain or food web. C) the physical environment where a species lives. D) the rate of nutrient cycling that takes place in an ecosystem.
The water table is
A. flat like a kitchen table. B. located 100 feet under the ground. C. part of the mantle. D. uneven and generally follows surface contours.