A Main Contribution of Cyanobacteria to Desert Crust is ____________

Question

A main contribution of cyanobacteria to desert crust is ____________.  
A) producing starch
B) water storage
C) unburying the soil when winds blow sand over it
D) fixing atmospheric carbon
E) fixing nitrogen

Accepted Answer

Cyanobacteria are known for their ability to fix atmospheric nitrogen, which is a crucial nutrient for plant growth. In desert crusts, cyanobacteria contribute to the nitrogen cycle by fixing nitrogen and making it available for other organisms in the ecosystem.