A species of bacteria lives in human intestines. The bacteria get food from the person in whom they live, and the person gets vitamins that the bacteria produce. What kind of relationship do these bacteria and humans have?Immersive Reader (5 Points) commensalism parasitism predation mutualism

The observations of hooke and van leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory? a. the cell theory stating that all living things are composed of cellsb. the theory of spontaneous generation, which held that life forms could arise spontaneouslyc. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organismsd. the germ theory of disease and causative agents

Which is the correct order in the scientific process? ask a question ® form a hypothesis ® make an observation ask a question ® make an observation ® form a hypothesis make an observation ® form a hypothesis ® ask a question make an observation ® ask a question ® form a hypothesis

What best explains the inability for life to exist in earth early atmosphere