What is usually the highest point on a beach?
a. Berm
b. Berm crest
c. Beach scarp
d. Backshore
e. Longshore bars
b
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A(n) ____________________ is a set of organisms within a defined area or volume that interact with one another and with nonliving matter in their environment.
Fill in the blank(s) with the appropriate word(s).
Hominins originated in ____
a. Africa b. Australia c. South America d. China e. North America
A group of waves is propagated at a speed that is ________ the speed of the individual waves in deep water.
A. twice B. one-half C. one-quarter D. the same as E. one-tenth
A polymorph can be defined as
A. minerals that have the same chemical formula and crystal structure, but exhibit different physical properties. B. a set of silicate minerals. C. minerals that have the same chemical formula, but different crystal structures. D. minerals that have the same crystal structure, but different chemical formulas.