What is net primary productivity ?

What is primary productivity ? Give the range of primary productivity in different ecosystems of the world

What is primary productivity ? Explain factors affecting it .

What is primary production ?

i) What is primary productivity? Why does it vary in different types of ecosystem? ii) State the relation between gross and net primary productivity.

Which of the following ecosystems is most productive in term of net primary productivity ?

What is primary productivity? Give brief description of factors that affect primary productivity

What is Gross primary productivity (GPP)?

What is gross primary productivity ? In what unit is it expressed ?

Write the relationship between productivity, gross primary productivity, net primary productivity, net primary productivity and secondary productivity.