1. Nutrient Cycles

2. Nutrients  Nutrients in the food you eat provide energy and matter that your body needs to stay alive  You need nutrients to carry out life functions

3. Types of Nutrients  carbohydrates, fats and oils, proteins, vitamins and minerals

4. Nutrients  Are made up of ELEMENTS  Sugar is a carbohydrate with the elements carbon, oxygen and hydrogen.  Nitrogen is part of protein  95% of your body is made up of just four elements  Carbon, oxygen, hydrogen, and nitrogen.

5. Nutrients Cycle  Back and forth between biotic parts (organisms) of ecosystem and the abiotic parts of ecosystem.  This process of moving back and forth is called nutrient cycle.

6. Water Cycle  Water is a substance that moves in a cycle.  It has no beginning or end.  It moves throughout the whole biosphere

7. Water cycle  Sun’s heat warms the surface water and the water evaporates into the atmosphere  In the atmosphere the water exists as a gas (water vapour)  When water vapour cools it condenses to form clouds

8. Water Cycle  From clouds, it may fall to the Earth as rain, hail, snow or sleet.

9. Run-off  Liquid that is not absorbed by the run off the surface into nearby streams or rivers.

10. aquifers  Some water seeps down through the soil into the ground water. Some ground water may flow into larger underground lakes

11. Water Cycle  Some of the water on the surface or in the soil is taken up by animals and plants  Plants have a major role in the water cycle.  Transpiration - plants release water vapour into the atmosphere through their leaves.