Criteria are the goals that the design must achieve. They're determined by what you want your tool or device to do. Constraints are limits on a design. List at least two criteria and one constraint for your tool or device based on what you want it to do.

Which property of soil depends on the size of particles? color odor temperature texture

Plants can have a positive and negative effect on the rate of weathering

What evidence does the writer give to support his argument about coral reefs? a) he speaks of the activities of coral polyps. b) he describes the composition of the great barrier reef. c) he emphasizes the ways in which coral reefs are fragile. d) he points out the ways that scientists do research on the reefs.