Carbon, nitrogen, oxygen and hydrogen )

 How do humans interfere with biogeochemical cycles? .

the major cycles (carbon, nitrogen, oxygen and hydrogen )

1,000 words

Research and reference academic research, applicable books and scientific articles, and ONLY professionally peer reviewed websites.You are allowed to include diagrams, photographs, graphs etc

Begin by introducing the cycle/s (350 word limit)

Structure your work as marks will be awarded for layout neatness as well as content quality.