Some roots have nodules that contain nitrogen-fixing bacteria. what would happen if these nodules were damaged or contained no bacteria?

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

Categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. makes predictions

Up to what percentage of the world's flora consisted of cycads during the triassic period? 100% 75% 50% 20%