1. Carbon and nitrogen cycles are biogeochemical processes that move these essential elements through living organisms, the atmosphere, soil, and water.
2. The carbon cycle involves photosynthesis (plants absorb CO₂), respiration (organisms release CO₂), decomposition, and combustion (burning fossil fuels releases stored carbon).
3. The nitrogen cycle includes nitrogen fixation (bacteria convert atmospheric N₂ to usable forms), nitrification (conversion to nitrates), assimilation (plants absorb nitrates), ammonification (decomposition releases ammonia), and denitrification (bacteria return N₂ to the atmosphere).
4. Human activities like burning fossil fuels and using synthetic fertilizers disrupt both cycles, contributing to climate change and pollution.
5. Understanding these cycles helps us manage ecosystems sustainably and mitigate environmental damage.
Parent Tip: Review the logic above to help your child master the concept of carbon and nitrogen cycle worksheet.
