Which of the following is an example of a trace fossil?
A) petrified wood
B) fossil dung
C) spider trapped in amber
D) carbonization of a bee
Answer: B
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Acids, salts, and metals are examples of
a. oxygen-demanding wastes b. organic plant nutrients c. inorganic plant nutrients d. inorganic chemicals e. sediment
The Green Revolution did not increase agricultural yields very much in South Asia
Indicate whether the statement is true or false
The two principle properties of wind are
A) turbulence and speed. B) speed and pressure. C) pressure and direction. D) speed and direction. E) pressure and turbulence.
What is the main reason why the age of oldest rocks can vary from one part of a continent to another?
A. Large parts of the continent are subducted deep within the mantle. B. Older rocks are commonly remelted over huge regions. C. Older rocks have been uplifted and eroded away. D. Parts of the continent have been added by the accretion of tectonic terranes.