For diffusion to occur, which condition must be met? a concentration gradient must exist. a hypotonic external environment is required. a hypertonic external environment is required. dynamic equilibrium must exist.

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Write an equation of the line that passes through the point (2, 3) and is perpendicular to the line x = -1. a) y = 1 b) y = 3 c) y = 0 eliminate d) y = -3

Using inductive reasoning, what are the next two number in this set? 2,3/2,4/3,5/4,