Which flasks contain organisms undergoing photosynthesis? Flask 1, 2, and 3
Flask 1 and 3
Flask 2 and 3
None

i am positive it is c. condensing but i may be wrong

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.

answer; both surfaces of the membrane are nonpermeable