If the question is referring to an osmosis experiment, the high test concentration of sugar in at the beginning will be INSIDE the visking tubing.
World formula
6CO2(gas)+12H2O(liquid)+photons------------------------->C6H12O6(aqueous)+6O2(gas)+6H2O
carbon dioxide+ water+light energy-->glucose+oxygen+water
D.
Cold and high salinity
Explanation:
Warmer waters are less dense than cooler/ cold waters. This is why surface ocean currents are made of warmer waters while deeper currents are cooler. The deep currents also have a higher salinity. This is because cooler water gets more concentrated faster by dissolving the same amount of solutes (in this case ocean mineral salts) compared to warm waters. This also makes deepwater currents them denser.
Invasive species often upset the equilibrium maintained by the current ecosystem, so the answer would be C. They threaten biodiversity