Matching Pairs Artificial Ecosystem MatchingOnline version Students will match the vocabulary words with their definitions. by MaryAnn Hamel 1 Organic Matter 2 Ecosystem 3 Mulch 4 GMOs 5 Nutrient Cycle 6 Decomposers 7 Pesticides 8 Artificial Ecosystem 9 Chemical Fertilizers A layer of material that is spread on the soil to smother weeds Living things whose genetic material has been changed by scientists A system of living and non-living things that work together Chemicals that kill plant pests Material made of dead plants and animals Plant food that is made by humans in factories Plants and animals in the soil that eat organic matter An ecosystem that is created and controlled by humans Organic matter is eaten by decomposers which release nutrients for new plants which die and become organic matter