Question : What is primary productivity ? Give a brief description of the factors that affect primary productivity .

Question : What is primary productivity ? Give a brief description of

1.	Question : What is primary productivity ? Give a brief description of the factors that affect primary productivity .
Answer» Solution :PRIMARY productivity refers to the rate of production of biomss or ORGANIC matter per unit area over a time PERIOD by the producers in an ecosystem . Varius factors which affect primary productivity include light , temperature , WATER , nutrients ect . In deserts , sunlight is abundant but water is scarce or nutrients are LACKING . Therefore , in such areas water is scarce or nutrients are lacking . Therefore , in such areas water and nutrient supply become the limiting factor . Productivity increases from polar regions towards the tropics because of the increasing sunlight and temperature .