The duplicity theory of vision holds that a single receptor system cannot produce both high sensitivity and high resolution. What does this theory explain

Two critical interventions to turn around the opioid crises are:

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

At which point is crust neither created nor destroyed? island chain mid-ocean ridge divergent boundary transform boundary