Answer:
C
Explanation:
Membranes will allow and inhibit certain ions/molecules. I don't believe it can distinguish whether the molecules are harmful or beneficial!
The answer is sediments because sediments break down and are every where on earth also break down due to weathering
The pH scale is from 1-14 and if the water is on 7, it would make it a neutral substance (C).
A hypothesis is an observation made by a scientist that can be tested over to be proven true or false
