Health professionals sometimes recommend nutritional supplements that contain a variety of species of bacteria to promote good digestive health. the product label for one of these supplements is shown above. why does this type of bacteria-filled supplement benefit human health instead of causing illness? a) stomach acids and digestive enzymes kill the bacteria in this type of supplement, protecting the person against future infections by live organisms. b) the human digestive system contains billions of beneficial bacteria that enhance digestion and nutrient absorption, synthesize vitamins, and limit the growth of harmful bacteria. c) these species of bacteria remove all the other species of microorganisms living in the human digestive system and ensure that no microorganisms survive to contaminate the body. d) these bacteria are able to deactivate viruses that may inhabit the human digestive system and are used to protect against further viral infections.

not too sure maybe olecranon process

cells use diffusion to get substances in and out of themselves. that diffusion will occur across the cell membrane or the outer covering of the cell. because we are talking about the surface of the cell, surface area and volume are  important factors here. as a cell increases in size, its surface area and volume increase as well.  we call that the surface area to volume ratio (sa: vol).  but the catch is that  volume increases at a greater rate than surface  area. in other words, as a cell gets bigger, the sa: vol gets smaller. so a really small cell like bacteria is mostly cell membrane (surface) with very little contents (volume). a really big cell like an egg, is mostly insides with a super thin membrane. so what ends up happening is that the cell cannot efficiently diffuse all of the stuff it needs in/out to survive. therefore cell size is limited to about 100mm. so how do we make organisms bigger than 100mm? cells divide! by dividing and becoming multicellular, organisms are able to grow!   check out the diagrams i attached to see the effect of sa: vol. i hope this ! good luck!

the answer is cell division : )

the missing space is phylum