water and carbon cycle

• environmental changes affect the distrubution of organisms
• Give three environmental factors that can affect organism distribution

  availability of water

  temperature

  atmospheric gases
• The water cycle means water is endlessly recylced
• Energy from the sun makes water evaporate from land and sea, turning it into water vapour
• warm water vapour is carried upwards and when it gets higher it cools and condenses to form clouds
• water falls from clouds as precipitation onto land where it provides fresh water for plants and animals
• Water evaporating from plants is called transpiration
• elements are cycled back to the start of the food chain by decay
• living things are made up of materials they take from around them. name the ones plants take and use

  carbon

  oxygen

  hydrogen

  nitrogen
• What do plants convert the materials they take from around them into?

  complex compounds
• materials used up in the food chain are eventually returned to the environment as waste products when..

  organisms DIEEEEE and DECAYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
• MATERIALS DECAY BECAUSE THEY ARE BROKEN DOWN BY MICROORGANISMS
• decay happens in moist, oxygen rich conditions which are warm
• decay puts mineral ions back into the soil
• The constant cycling of carbon is called the carbon cycle
• co2 is removed from the atmosphere by green plants during photosynthesis
• When plants and algae are eaten by animals carbon becomes apart of the fats and proteins in the animal and moves up the food chain
• When animals respire carbon is returned to the atmosphere in the form of carbon dioxide
• when animals and plants die, detritus feeders and microorganisms feed on their remains
• when microorganisms respire, co2 is returned to the atmosphere
• animals produce waste that is broken down by detritus feeders and microorganisms
• the combustion of wood and fossil fuels returns carbon into the atmosphere