Provide two definitions of recruitment and identify four sources of recruitment variability. What are two common approaches to model/describe stock-recruitment relationships and how do they differ?Bycatch is an issue that is difficult to address, in part because much of it happens with little or no documentation. a) What are discards? b) Why do people discard fish? List at least 3 reasons. c) Explain four reasons why we should reduce bycatch. d) Are there any concerns associated with bycatch reduction, where perhaps the solution causes new problems? Give examples.Bycatch is an issue that is difficult to address, in part because much of it happens with little or no documentation. a) What are discards? b) Why do people discard fish? List at least 3 reasons. c) Explain four reasons why we should reduce bycatch. d) Are there any concerns associated with bycatch reduction, where perhaps the solution causes new problems? Give examples