What fluid, with a very high osmolarity, was used in part 2 of the paper chromatography experiment? why is this important? why is it essential to keep it cool?

The fluid which has very high osmolarity used in the experiment was Sucrose solution.

This fluid is important because it regulates the natural reaction of the leaves and also prevents interference from outside sources.

It was essential to keep it cool because cold temperature helps inhibit the rate of photosynthesis so it gives protection to degradation of proteins.

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).

thinking it would be d not too sure but i think it's right