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Every student must submit their assignment by Friday.

me

his

I have been living here since 2022.

will be travelling

had already started

have known

will have worked

The controlled biological decomposition of organic materials into a nutrient-rich soil amendment

Nitrogen and phosphorus

Excessive nutrient enrichment of water that can cause algal growth and oxygen depletion

It absorbs most of the Sun's harmful ultraviolet-B radiation