Which of the following is a group of different species living in the same approximate place
a. community
b. population c. ecosystem
d. biosphere

In which layer of earth do most earthauakes occur a_ inner core b_outer core c_mantle d_crust

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

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