Can y’all help me with this!!for 40points?

What kinds of molecules can pass through the cell membrane without any problem?

Which process moves molecules and has these traits? -moves from high concentration to low concentration -moves from uneven distribution to even distribution -can occur when there is no membrane o o active transport in a cell diffusion osmosis o passive transport in a cell

The footprints of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils