What does it mean for a cell membrane to be selectively permeable?
(a) it allows some substances to pass through but blocks the passage of others.
(b) it allows molecules to pass through if they are under a certain size.
(c) it allows only water molecules to pass through.
(d) it blocks the passage of most substances.

How do living things obtain phosphorus

What advantages does a pedigree have over a written passage?

Pls in your opinion, what are the limiting factors that might affect the growth or diversity of our ecosystem? respond to this question in claim, evidence, reasoning format. 1. make your claim (i are the limiting factors that might affect the growth or diversity of our 2. follow the claim with 3 pieces of evidence. evidence may be taken from the reading, the videos, previous lessons, or googled answers. site sources, too. 3. use reasoning to explain why you chose your evidence.