In an ecosystem, all the trophic level in a food web are closely interlinked and any change in one level is bound to affect the other levels. The various trophic levels may correspond to producers (such as grass and plants), primary consumers (such as deer), secondary consumers (such as tigers or lions, etc.), etc. If we reduce the land available or necessary for sustaining the ecosystem by half (5 acres instead of 10 acres).
Constants are factors that are not changed in the experiment. Since the experiment is testing different colors of light on plant growth, light color is being changed, and is therefore not a constant. Hope this helps! :)
activities of living organisms (animals, burrows, plant roots), pressure from overlying load/materials and atmospheric conditions.
The environment the body was left in
The answer is true.
A placer deposit is a deposit of earth, sand, or gravel formed due to the differential settling of the denser, heavier components. The placer contains particles of valuable mineral and it is found usually in the bed of a river or lake.
