Some planktonic cyanobacteria have the ability to "fix" which of the following elements, thus having a fertilizing effect on the marine environment similar to the ability of the land plants legumes?
A. hydrogen
B. oxygen
C. nitrogen
D. helium
Answer: C
Environmental & Atmospheric Sciences
You might also like to view...
According to the World Health Organization, the root cause placing people at the highest risk of disease is
A) infectious disease. B) cancer. C) heart disease. D) poverty.
Environmental & Atmospheric Sciences
Most caves and caverns originate by solution of limestone
Indicate whether the statement is true or false
Environmental & Atmospheric Sciences
Wetlands perform a major ecosystem service of trapping and filtering water as it passes through the wetland area.
Answer the following statement true (T) or false (F)
Environmental & Atmospheric Sciences
Longshore currents carry beach material perpendicular to the coast.
Indicate whether the statement is true or false.
Environmental & Atmospheric Sciences