A liquid is polar, which means a substance can easily dissolve in it. How can you test water’s polarity compared to other substances? To measure solubility, it is necessary to compare initial and final results using your visual observations.

Average growth population growth

It is mutualism commensalism parasitism predator prey

Producers (autotrophs) are in the bottom (first) trophic level, primary consumers are in the second trophic level, secondary consumers are in the third trophic level and tertiary consumers are in the top trophic level. energy moves through the trophic levels when one living organism is being consumed by another. moreover, energy level becomes lower as it moves up the energy pyramid because of it being released as heat. food chain is when there is a single pathway of energy transfer whereas a food web is when there are multiple pathways of energy transfer.