A pipe that helps remove excess water from a planting hole. The absorption of heat from the atmosphere during evapotranspiration. The loss of water through a plant's leaves, where it evaporates. A valve that reduces water flow from faucets. The plants and animals through which energy flows.
Plants make up the base of the chain, by converting energy from the sun into food.
Animals make up the next steps in the chain, by eating plants or other animals to get energy. Includes coal, oil, and natural gas. Fossil fuels are derived from prehistoric plant and animal materials that were exposed to high temperatures and pressure. Energy from the earth, derived as heat. An area of green open space that surrounds and stretches into cities.