Is bacteria in human intestines a commensalism mutualism parasitism or predator and prey relationship?

What was carolus linnaeus' classification system of organisms based on? a.physical characteristics of organisms b.food habits of organisms c.habitat of organisms d.size of organisms

Where is most of the fresh water on earth found a in the ocean b in glaciers and in ice caps c in rivers d in the soil

If t=tall and t=short what will be the physical appearance of the offspring the cross below? a.some will be tall and some will be short b.they will all be tall c.they will all be short d.they will be medium height