What is the effect of increase of `CO_(2)` concentration on photosynthesis in plants?

Explanation

### Step-by-Step Solution:

1. **Understanding Photosynthesis**: Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy, using carbon dioxide (CO2) and water (H2O) to produce glucose and oxygen.

2. **Effect of Increased CO2 Concentration**: When the concentration of CO2 in the atmosphere increases, it directly affects the rate of photosynthesis. Higher levels of CO2 provide more raw material for the photosynthesis process.

3. **Rate of Photosynthesis**: As CO2 concentration increases, the rate of photosynthesis also increases. This is because CO2 is one of the key reactants in the photosynthesis equation. More CO2 means that plants can produce more glucose, which is essential for their growth.

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