Which equation describes a reduction?
Upper M g (s) right arrow Uper M g superscript 2 plus (a q) plus 2 e superscript minus.
2 upper C l plus 2 e superscript minus right arrow 2 upper C l superscript minus.
Upper N a (s) right arrow upper N a superscript plus (a q) plus e superscript minus.
Upper A l (s) right arrow upper A l superscript 3 plus (a q) plus 3 e superscript minus.

the leaf is an organ of a typical plant, and the main functions are to complete photosynthesis and allow the plant to exchange gas, just like how we have the respiratory system. leaves have the stomata, which collects maintains co2 and o2 levels. this is necessary for cell metabolism. the leaf also collects sunlight using chloroplasts. succinctly, leaves own a pivotal role in sustaining plant life.

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year