How did ichthyosaurs and plesiosaurs differ?
A)Ichthyosaurs were able to travel onto the land.
B)Ichthyosaur females probably gave birth to live young.
C)Plesiosaur females probably gave birth to live young.
D)Plesiosaurs were adapted only to the aquatic environment.
E)Ichthyosaurs ate fish and plesiosaurs did not.
B
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Biomes are large terrestrial regions characterized by certain types of ____________________ and ____________________
Fill in the blanks with correct word
Why is granite considered a coarse-grained felsic rock?
A) It contains a lot of feldspar and silica. B) It contains little feldspar and silica. C) It contains a lot of magnesium and iron. D) It contains a lot of feldspar and a little silica.
Aquatic ____________________ is determined by environmental factors including temperature, sunlight, dissolved oxygen, and available nutrients.
Fill in the blank(s) with the appropriate word(s).
The Southeast Asian country that was under Pol Pot in the 1970's is
A. Laos B. Vietnam C. Thailand D. Cambodia