Which statement about the properties of Earth’s crust is true at subduction zones?
a. Ocean crust is subducted because it is lighter than continental crust.
b. Continental crust is subducted because it is lighter than ocean crust.
c. Ocean crust is subducted because it is thicker than continental crust.
d. Continental crust is subducted because it is colder and denser than ocean crust.
e. Ocean crust is subducted because it is colder and denser than continental crust.
e
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a. Frustule b. Flagellate c. Pennate d. Auxospore
If a rock is slowly heated to 1200°C, the first minerals to melt would be quartz and potassium feldspar.
Answer the following statement true (T) or false (F)
A chemist has a sample which is known to be a solution. Which of the following might be used to separate the components of the solution?
A) chromatography B) filtration C) either a or b D) neither a nor b
Anoxic water contains too much oxygen.
Answer the following statement true (T) or false (F)