'Cars became part of American culture in the 1920s, however seat belts did not become mandatory until 1968. Likewise, the U. S. has been growing food and
selling it in markets throughout our nation’s history, but nutritional labeling as
We know today was not mandated until 1990. The first genetically modified
food was created in 1983, but we currently don’t mandate that
companies label such foods.”
“Why do you think government does or does not regulate (set standards and
expectations for) industry? What is the government’s obligation to keeping food
and products safe for general use? How can that obligation to keep us safe be
balanced with a company’s ability to be profitable and free of rules that might
be too costly for business?”
Pl someone hel

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!

it's c.us forest service