It is dangerous for the plants and corps and changes rivers too acidic for living fish and other animals in .
It is dangerous for the plants and crops and it makes the rivers too acidic for living fish and other animals in it . It is dangerous for the plants and crops and makes rivers too acidic for fish and other animals to live in . It 's dangerous for plants and crops , and changes to rivers make them too acidic for fish and other animals to live in . It is dangerous for the plants and crops , and the rivers are becoming too acidic for fish and other animals to live in .