Primary productivity caries from ecosystem to ecosystem. Explain ?

Explanation

### Step-by-Step Solution:

1. **Definition of Primary Productivity**:
- Primary productivity refers to the rate at which primary producers, such as plants, capture and store solar energy through photosynthesis. This process converts solar energy into chemical energy in the form of organic compounds.

2. **Role of Primary Producers**:
- Primary producers, mainly green plants, are essential for primary productivity. They are responsible for converting sunlight into usable energy, which forms the base of the food chain in an ecosystem.

...