Fill in the blanks and select the correct option.
Due to deforestation, the carbon dioxide level will __I___ in the atmosphere, the rate of infiltration will ___II____ in the soil and the temperature of the earth will ___III___.

Options

A. I-decrease , II-increase , III-increase
B. I-increase , II-decrease , III-increase
C. I-decrease , II-decrease , III-increase
D. I-increase , II-decrease , III-decrease

Explanation

To fill in the blanks in the given question, we will analyze each part of the statement related to deforestation and its effects on the environment.

### Step-by-Step Solution:

1. **Understanding the Impact of Deforestation on CO2 Levels:**
- Deforestation leads to the removal of trees, which are crucial for photosynthesis. During photosynthesis, trees absorb carbon dioxide (CO2) from the atmosphere.
- With fewer trees, less CO2 is absorbed, resulting in an increase in the level of CO2 in the atmosphere.
- **Fill in the blank I:** The carbon dioxide level will **increase** in the atmosphere.

2. **Analyzing the Effect on Soil Infiltration:**
- Trees and their roots play a significant role in maintaining soil structure and promoting water infiltration.
- With deforestation, there are fewer roots to help absorb and filter water, leading to decreased infiltration rates in the soil.
- **Fill in the blank II:** The rate of infiltration will **decrease** in the soil.

3. **Considering the Temperature of the Earth:**
- The increase in CO2 levels contributes to the greenhouse effect, where CO2 traps heat in the atmosphere.
- This results in an overall increase in the Earth's temperature, commonly referred to as global warming.
- **Fill in the blank III:** The temperature of the earth will **increase**.

### Final Answer:
- I: increase
- II: decrease
- III: increase

### Selected Option:
- The correct option is **B: increase, decrease, increase**.