The electric field of a sinusoidal electromagnetic wave obeys the equation e=(375v/m)cos[(1. 99×107rad/m)x+ (5. 97×1015rad/s)t].

In this food web, which group would increase in number if snakes were eliminated? a. producers b. decomposers c. primary consumers d. secondary consumers e. tertiary consumers

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Afish fossil is found in a rock. a foot bone and tooth are found in an older layer of the same rock. what can scientists learn from the rock? a) the area changed from land to water. b) the area changed from water to land. c) the area has always been land. d) the area was once an ocean.