What assists the movement of substances by facilitated diffusion?

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

Arrange the following in the correct sequence, from earliest to most recent, in which these plant traits originated. 1. sporophyte dominance, gametophyte independence 2. sporophyte dominance, gametophyte dependence 3. gametophyte dominance, sporophyte dependence a) 1 → 2 → 3 b) 2 → 3 → 1 c) 2 → 1 → 3 d) 3 → 2 → 1 e) 3 → 1 → 2

Aflame cell is at the end of each tubule of the nephridium malpighian tubules kidneys none of the above