When did the last ice age begin?
A)150 years ago
B)500 years ago
C)10,000 years ago
D)1.5 million years ago
E)2.6 million years ago
E
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A population of bullfrogs in a pond produces many thousands of eggs each spring that hatch out into tadpoles. However, only about 1% of the tadpoles survive to reproduce. This population of frogs is experiencing
A) low environmental resistance. B) low levels of recruitment. C) unlimited population growth. D) exponential growth.
What is the smallest number of carbon atoms which can be found in an ether?
A) 1 B) 2 C) 3 D) 4
Empirical science
What will be an ideal response?
What is NOT one of the indirect effects of Pleistocene glaciations?
A. Twenty percent of land was indirectly shaped by ice. B. Global sea level lowered with glacial advance. C. The weight of glacial cover caused crust to sink. D. Lakes were created where none had existed. E. Areas under ice were shielded from weathering.