1 / 12

Cycles In Nature

Cycles In Nature. Objectives: Define the term “Cyclical” Identify three cycles in our natural world Describe these cycles in detail. All living things on earth (Plants and Animals) are made of carbon. Animals breathe in oxygen and release CO 2

eden-dodson
Download Presentation

Cycles In Nature

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Cycles In Nature Objectives: Define the term “Cyclical” Identify three cycles in our natural world Describe these cycles in detail

  2. All living things on earth (Plants and Animals) are made of carbon. Animals breathe in oxygen and release CO2 Carbon Dioxide can be found in the air. Plants use Carbon dioxide and the energy from the sun (photosynthesis) to grow. They then release O2 (oxygen) Burning wood and fossil fuels (coal and oil is ancient petrified organisms held under extreme pressures in the earth) increases CO2 in the atmosphere CO2 is a greenhouse gas that causes global warming when too much is trapped in the atmosphere Carbon Cycle

  3. Carbon Dioxide is known as a green house gas. Carbon Cycle

  4. The continuous movement of water from the earths surface into the atmosphere and back Evaporation, condensation and precipitation make up the water cycle ThE Water Cycle

  5. Liquid water from oceans, lakes and even plants and animals receive energy from the sun and turn to water vapor. This water vapor rises into the atmosphere Evaporation/Transpiration

  6. As the water vapor rises into the atmosphere it begins to cool and turns back into a liquid form. Condensation

  7. As the water begins to condense, clouds form. Eventually the water begins to fall back onto the earth surface as precipitation (rain, snow, hail) Most precipitation falls back into oceans or lakes. The rest may fall onto land where it seeps into the ground (Groundwater) where it is reabsorbed by plants. It may also flow from land to lakes, streams and oceans by a process called runoff. Precipitation

  8. Nitrogen is also an important element in life. Proteins, DNA and many other structures in the body need nitrogen. Nitrogen is the most abundant gas in the air (78%) However, nitrogen gas cannot be used by most living organisms. It must be “fixed” The Nitrogen cycle

  9. Bacteria use the nitrogen gas found in air and create nitrates, which can then be used by plants. Some plants have even developed a symbiosis with bacteria to acquire these nitrates. Animals then eat plants (or other animals) for their nitrogen uptake. Nitrogen Fixation

  10. Bacteria also decompose plant and animals, releasing their nitrogen (as well as carbon) back into the atmosphere and earth. Decomposition

More Related