After reading the paragraphs below, answer the questions that follow.
Textile mills often release dye color and toxic by-products into rivers and streams, which may then taint groundwater. Fungi associated with mangrove trees have been shown to reduce both colors and toxicity in tainted groundwater.
The fungi are being used as a form of
◦ phagocytosis.
◦ mixotrophy.
◦ endosymbiosis.
◦ bioremediation.