The movement of substances (as by diffusion) across a cell membrane without the expenditure of energy.
I believe, I mean Billy believes in gradualism~
The answer should be —10 — 5i
The child is more susceptible to diseases than the father because the father has already gained a slight immunity towards the lead by loving in the house longer than the child (assuming the father has lived in the house longer)
Cytoplasm. This photo should help explain it!
