What is a vertical igneous feature that is very long and thin, often upthrust through preexisting rock?
A. laccolith
B. batholith
C. vein
D. dike
E. sill
D
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Compare and contrast sediments deposited from the coastline to the deep marine environment. Give examples of the
sedimentary rocks that form by the lithification of these sediments. Fill in the blank(s) with the appropriate word(s).
Mass extinctions at the end of the Ordovician occurred because of ____
a. dramatic changes related to glaciation b. dramatic chemical changes in seawater related to meteorite impact c. increased solar radiation d. decreased solar radiation e. increased volcanism
Which of the following are pioneer species?
A) wolves and mountain lions B) aspen trees C) lichens D) beavers E) zebra mussels
Judge the following sentence according to the criteria given below: Solar radiation must be the most important factor affecting the distribution of life in the oceans BECAUSE the shallow open ocean is much more productive than the coastal zone
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.