learning task 1 : true or false. Write true if the statement is correrct and false if it is incorrerect .1.Corals are living organisms, 2.Ecosystem can be destroyed by human activities. 3.Mangroves, coral reefs, and rainforest are examples of ecosystem. 4.Destroying the ecosystem can harm humans and other forms of organism. 5.If there are no mangroves forest,then the sea will have no meaning.​