These three are the basis of the earth's sustainable ecological functioning, and thus ours as well
What do YOU really need to survive?
Clean water (to drink)
Clean Air (to breathe)
Clean soil (to grow plants to eat)
(to provide food and shelter - and to create natural services that we need to survive)
Everything else is EXTRA
Natural Capital is the buzzword ecologists use to group resources and services
NATURAL CAPITAL = NATURAL RESOURCES + NATURAL SERVICES
NATURAL RESOURCES: Air, Water, Soil, Land, Life (biodiversity), Nonrenewable minerals (iron, sand), Renewable
energy (sun, wind, water flows), Nonrenewable energy (fossil fuels, nuclear power)
NATURAL SERVICES: Air purification, Water purification, Soil renewal, Nutrient recycling, Food production,
Pollination, Grassland renewal, Forest renewal, Waste treatment, Climate Control, Population control (species
interactions), Pest control
are communities of plants, animals, and microbes along with the abiotic components such as soil and water.
Some ecosystems appear to be lifeless or useless such as deserts, but the resulting community (cactus, snakes, etc.) is