this is a diagram or activity to show the workingbof a lung
Explanation:
the rubber sheet is equivalent to the bottles end kept on. The bottle represents the chest cavity and the rib cage. The plastic /balloon handle represents the diaphragm.the rubber sheet wheen pulled down allows air from the straws to come into and the balloons inflate . they reinflate because they get the pull force or space to inflate more.the rubber sheet when pushed back in occupies the place which it made when was pulled and it even stops the pull forcemi am not that accurate u nay frame with your answers with these points.#i have social tmrw.all the best
Protozoa have been classified into three trophic categories: the photoautotrophs which harness the sun's radiant energy in the process of photosynthesis; the photoheterotrophs, which although phototrophic in energy requirements, are unable to use carbon dioxide for cell synthesis and must have organic carbon compounds
