Earthworms like the one scene here 11 saw your bunny wondered how changes in the moisture content of the soil would affect the movement of the worms he want to design an experiment to test his idea what would be benny’s manipulative variable in this experiment

Hydrilla (hydrilla verticillata) is an invasive aquatic plant and one of the most serious aquatic pests in florida. hydrilla has already been introduced to hundreds of bodies of water throughout florida, hydrilla is difficult to control because it grows rapidly and survives in many different water depths and conditions. hydrilla • describe how hydrilla affects native plant and animal species. include both a biotic and an abiotic limiting factor. • suggest one biotic and one abiotic recommendation that could slow the spread of hydrilla