He law of constant composition says that the composition of a compound is always the same that the composition of a homogeneous mixture is always the same that the composition of an element is always the same that the composition of a heterogeneous mixture is always the same that all substances have the same composition

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.

1. list three scientific reasons cockroaches may fly.

What are several ways to reduce the effect of friction