The tsunami struck asia in 2004 caused widespread damage. which biopic change had the biggest impact on local ecosystem a. introduction of many new species of fish tht competed with local species b. soil contamination and destruction of microorganisms by salt water c. the destruction of man crops being raised on farmland d. survival of many coconut palm trees that could provide forage

your answer would be letter b

The correct answer is option B, that is, soil contamination and destruction of microorganisms by salt water.  

The tsunami struck Asia in 2004 led to widespread destruction. Of these, the contamination of soil and the destruction of microbes that maintains the balance of the ecosystem exhibited a major impact on the local ecosystem.  

Due to tsunami two oil plants in Indonesia got destroyed that released 8 million liters of oil into the environment resulting in widespread pollution at sea and contamination of soil. The high salt concentration of floodwater damaged the natural balance of various ecosystems.