A park with a small lake is home to a population of ducks. The building of a housing complex
eliminates a nearby pond. Soon other ducks and waterbirds like geese and egrets come to live at
this small lake."

15. State one specific way the new populations of birds may affect the original population of
ducks.

16. State one specific way the new populations of birds may change the abiotic factors of the
environment in and around the lake.

17. Predict one way the new populations of birds may affect the populations of plants that
live in and around the lake.