Rudist bivalves were an important component of the Mesozoic reef community
a. True
b. False
True
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Which plants have sperm that swim through the environment to reach the eggs?
A. mosses only B. mosses, ferns, and seed plants C. mosses and ferns D. seed plants only
The infant mortality rate (IMR) is the annual number of ________
A) deaths of infants under 5 years of age, compared with total live births B) deaths of infants under 1 year of age, compared with total live births. C) serious illnesses of infants under 1 year of age, compared with total live births. D) serious illnesses of infants under 5 years of age, compared with total live births. E) children under the age of 5 who die from teenage births
Any individual volcano always erupts magmas of the same type. Indicate whether the statement is true or false
The scale of an atmospheric feature depends on its
A) areal coverage only B) time span only C) both areal coverage and time span