ECOSYSTEM

Anmerkungen:

• An ecosytem is mede up of  all the living things and the physical environmet in one place . includes water,soil and climate   forests grasslands and deserts are terreatial ecosystem oceans , lakes and rivers are aquatic ecosystems . Be saltwater or freshwater 

1. ARE 3 PARS
2. 1. a spanish park
      1. in 1994 unesco declared doñana a world hertage site
         1. the park is used annally by thousands of pople participating
            1. it was declad a nation park in 1963 when the spanish +
   2. relationships in ecosystems

      Anmerkungen:

      •  pergunta : what type of relationship exists between plants and the insects that pollinate their folwers? 
      1. problems affecting ecosystems

         1. Anlagen:

            • ECOSYSTEM
            1. human actiivity can damege ecosysteme
               1. pollution afects weter , air and solik
                  1. deforestation causes the lossof the loss of vegetation and fertile soil
                     1. overexploitation leads to the extinction of animals and plants
      2. food chains
         1. certain spaciales eat other species .
            1. the food chain persents
               1. these relationships
      3. competision
         1. the is when spacies have the same needs
            1. and compate for them
      4. cooperation
         1. the is when species
            1. interact and obtain a mutual benefit
         2. tisps of eco sistem
            1. living organisins in ecosytem
            2. eco sistem is a
               1. is plats , persons and animals other livicisg