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Ecosystem- How they are

  1) MATTER, ENERGY, LIFE
      a) Matter –Matter is anything made of atoms and molecules. Anything that has mass and takes up space
      b) Atoms- Basic building blocks of matter.
      c) Molecules- Atoms can join together to form molecules
      d) Elements- Building blocks for all matter. CHNO-PS
      e) Compounds- Carbohydrates, lipids, proteins, and nucleic acids
  2) FOUR SPHERES
The area near the surface of the earth can be divided up into four inter-connected "geo-spheres:" the lithosphere, hydrosphere, biosphere, and atmosphere. The names of the four spheres were derived from the Greek words for stone (litho), air (atmo), water (hydro), and life (bio).

      f) HYDROSPHERE
The hydrosphere is composed of all of the water on or near the earth. This includes the oceans, rivers, lakes, and even the moisture in the air. Ninety-seven percent of the earth's water is in the oceans. The remaining three percent is fresh water; three-quarters of the fresh water is solid and exists in ice sheets

      g) LITHOSPHERE
The lithosphere is the solid, rocky crust covering entire planet. This crust is inorganic and is composed of minerals. It covers the entire surface of the earth from the top of Mount Everest to the bottom of the Mariana Trench (deepest part of the world's oceans)

      h) BIOSPHERE
The biosphere is composed of all living organisms. Plants, animals, and one-celled organisms are all part of the biosphere. Most of the planet's life is found from three meters below the ground to thirty meters above it and in the top 200 meters of the oceans and seas.

      i) ATMOSPHERE
The atmosphere is the body of air which surrounds our planet. Most of our atmosphere is located close to the earth's surface where it is most dense. The air of our planet is 79% nitrogen and just under 21% oxygen; the small amount remaining is composed of carbon dioxide and other gasses.

All four spheres can be and often are present in...