The decay and compression of organic material millions of years ago resulted in extremely fertile soil that large rain forests to grow. this describes

The decay and compression of organic material millions of years ago resulted in extremely fertile soil that helped large rain forests to grow. This describes the way energy and matter are recycled within an ecosystem. This organic material goes into the ground, feeds it, and in turn makes it fertile so that various types of trees and plants can grow from it.

Answer (b) supersaturation;

For lesson: cameras, plant presses, newspaper, paper towels, clip boards, pencils, calculators, field guides, metric measuring tapes, paper, transect squares, colored pencils, ph meters, light meters, computers, etc.for extension: baggies for soil samples collecting, distilled water, hand shovels, beakers, boiled rice, microscopes, well microscope slides or regular microscope slides with cover slips