Match the terms to their definition. 1. consumer
a series of steps that illustrates the flow of energy from one organism to the next
2. decomposer
an organism that breaks down dead matter into chemical nutrients
3. food chain
an organism that eats food made by another organism
4. matter
the breaking down and wearing away of the earth's surface
5. weathering
anything which has mass and occupies space

Ascientist is investigating the effects of salinity on fish development. he places fertilized fish eggs in an aquarium that contains low salinity and observes their development. what factor would improve experimental design the most? place the fish eggs in the open ocean because that is the natural habitat include another aquarium that has normal salinity to compare to the low salinity aquarium include an aquarium that replaces salt with sugar to confirm that the effects are specific to salt grow algae with the fish eggs in order to provide adequate nutrients to the developing embryos