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What is Symbiosis?  

Symbiosis is close and often long-term interaction between two different biological species.
Symbiosis has three types. They are Commensalism,Parasitism and Mutualism.
What are they?
Commensalism describes between two living things where one benefits and the others is not significantly harmed or helped.
Parasitism is about one benefits while the other is harmed.
Mutualism is a relationship between individuals of different species where both individuals benefit.

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simple number         Weight (G)            volume (ml)           Density

           7                       100                         245                   0.40816
           6                       50                           110.9                0.545085
      pumice                   45                           20.92                2.15105
          3                        45                            47                    0.95744
          X                       50                            120.4               0.41528
           2                       50                            137.5               0.36363



cold

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I can do anything and has done what has never been done for instance feed shrimp see substances in water

global warming cause:don't have trees,it have by the gas that not good to our self and it go to atmosphere,it have Greenhouse gas.

effect:the ice in ocean melt and it will be flood,hot,the animal will died because it hot!!!
cure: plant tree , put the grabage in the bin.