Process where living things need interact with others living things in the environment to transform the elements of environment or reuse them so that they are always available. Photosynthesis Energy cycle Natural cycle. State of water in atmosphere: Snow state Gaseous state Liquid state. This is Water Cycle: Sea water evaporate goes to atmosphere to form clouds then fall like rain, snow or hailstones to the ground after to form rivers that carries the water to sea again. Water of rivers go to lakes The plants absorb water from soil. Is a gaseous chemical compound that is in most greater amounts than Oxygen in the atmosphere: water vapor Nitrogen Carbon dioxide CO2. All living beings are formed by substance that have: Soil photosynthesis Carbon C.
