Which characteristic sets dinosaurs apart from reptiles?
A)teeth permanently attached to the jaw
B)amniotic eggs
C)flight
D)ball-like head on the upper leg bone
E)permanent bend in the lower leg bone
Question 2The oceans are most likely to get saltier if ____.
A)outgassing is reduced
B)precipitation increases
C)runoff from lakes and streams is increased
D)glaciers melt
E)the formation of evaporite deposits increases
Question 3Gneiss is a high-grade metamorphic rock that is streaked or has segregated bands of light and dark minerals.
Indicate whether the statement is true or false
Question 4____ plants came to dominance in the Cretaceous.
A)Land
B)Leafy
C)Green
D)Flowering
E)Tall
Question 5Geologic evidence suggests that oceans formed by at least ____.
A)200,000 years ago
B)4.6 million years ago
C)2.4 billion years ago
D)3.5 billion years ago
E)4.6 billion years ago
Question 6Slate is a very fine-grained foliated metamorphic rock that commonly exhibits cleavage.
Indicate whether the statement is true or false
Question 7_____ are extinct squidlike cephalopods from the Cretaceous that are excellent guide fossils.
A)Belemnoids
B)Nautiloids
C)Coleoids
D)Oysters
E)Ammonites
Question 8Salinity of seawater is a measure of ____.
A)the total sodium and chloride
B)the total quantity of dissolved solids
C)trace elements
D)chemical weathering in the oceans
E)the volume of elements outgassed
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