Explain how the introduction of the Sailfin Catfish to a new ecosystem can have a negative impact on food web. Explain why the Sailfin Catfish population has been so successful in the Everglades ecosystem.

answer: c. relative dating

relative dating uses the location and depth of where fossil is found in order to estimate it's age. it gives an idea about the order of past events. it does not give the absolute age but can give approximation. it just gives an indication about one fossil is older than other.

translocation                                                                                         b                                     b   is the answerr