A proposal intended to explain certain facts or observations.
The natural home of an animal or plant
Electrical energy produced by moving water
Energy or power produced by moving water.
The process in which natural habitat is rendered functionally unable to support the species present.
The natural homes or environments of an animal, plant, or other organism
Regulatory substances produced in organisms and transported in tissue fluids such as blood or sap to stimulate specific cells or tissues into action.
The force needed to cause an extension/compression in a spring is directly proportional to its extension/compression.