Brainiest, thx, and 15 points! it looks like a lot but its just an opinion question worldwide, about twice as many people eat a plant-based diet as eat a meat-based diet. a plant-based diet requires fewer resources to produce. it takes 28 calories of fossil-fuel energy to produce 1 calorie of protein from meat. in contrast, it takes only 3.3 calories of fossil-fuel energy to produce 1 calorie of protein from grain. with the population continuing to increase, some people believe it may be necessary to give up meat-based diets to ensure that there are enough resources to produce food for all people. do you think that a plant-based or a meat-based diet is more nutritious, or are they both equally nutritious? why does a plant-based diet require fewer resources to produce? do you think people should eat less meat? why or why not?

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!