Which type of sediment is generated in place, on the spot where we find them?

A) terrigenous sediments
B) biogenous sediments
C) hydrogenous (or authigenic) sediments
D) cosmogenous sediments


C

Environmental & Atmospheric Sciences

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The mantle can be separated into two different portions-the lower mantle and the upper mantle. The lower mantle is

A. composed of putty that flows like molasses. B. predominantly liquid. C. rigid and cannot flow. D. completely solid due to extreme pressure that prevents rocks from melting.

Environmental & Atmospheric Sciences

The properties of seawater at depth are determined by surface conditions in the area where the water sinks.

Answer the following statement true (T) or false (F)

Environmental & Atmospheric Sciences

?Making recycled paper produces less water pollution and less air pollution than does making paper from wood pulp.

Answer the following statement true (T) or false (F)

Environmental & Atmospheric Sciences

Which is not a common particle size for most marine sediments?

a. Clay b. Silt c. Sand d. Pebbles

Environmental & Atmospheric Sciences