Some molecules diffuse through cell membranes, but many others cannot. A membrane that allows some, but not all, molecules to pass through it is
called
A. permeable
B. semipermeable
C. impermeable
O D. nonporous

hydrogen is a compound or a single element and a element is a pure substence that cannot be separated into simpler subtances

clorine is a compound its a chemical substance that forms when two or more different elements combine

so both hydrogen and clorine are compounds

silty loam

hope this

what in the weirdo : o