Carbon and Nitrogen Cycle Quiz

What is the hardest known material to man?

What is the main process by which plants and algae convert carbon dioxide into glucose?

What is the main process by which animals and plants release energy for biological processes?

What is the main process by which fungi and decomposers release organic compounds and nutrients?

What is the main process by which dead organisms can fossilize over thousands and millions of years?

In this process, decomposers turn nitrogen compounds from dead organisms and organic waste into ammonium (NH4+):

What is the main component of proteins and nucleic acids like DNA and RNA?

What is the process by which bacteria convert nitrogen gas into ammonium ions?

What is the process by which nitrates are absorbed by plant roots and used to build nucleic acids and proteins?

What is the process by which nitrates are turned into nitrogen gas by denitrifying bacteria?