State which of the following statements is false.

Options

A. The matter contained in the body of plants and animals is called biomass.
B. Biogas is produced by decay of biomass.
C. Petroleum is formed from the remains of dead animals in the sea.
D. Fossil fuels should be conserved because they give lot of energy.

Explanation

To determine which statement is false among the options provided, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Understanding Biomass**:
- The first statement claims that "the matter contained in the body of plants and animals is called biomass."
- **Analysis**: This statement is true. Biomass refers to organic material derived from plants and animals, which can be used as a renewable energy source.

2. **Understanding Biogas**:
- The second statement states that "biogas is produced by the decay of biomass."
- **Analysis**: This statement is also true. Biogas is indeed produced through the decomposition of organic matter, which includes biomass from plants and animal waste.

3. **Understanding Petroleum**:
- The third statement claims that "petroleum is formed from the remains of dead animals in the sea."
- **Analysis**: This statement is partially true but misleading. Petroleum is formed from the remains of ancient marine organisms, which includes both plants and animals. However, it is more accurate to say it is formed from ancient marine organisms rather than just dead animals.

4. **Understanding Fossil Fuels**:
- The fourth statement discusses fossil fuels, stating that "fossil fuel gives a lot of energy, so it should be conserved."
- **Analysis**: While it is true that fossil fuels provide a significant amount of energy, the statement implies that the reason for conservation is solely based on energy output. The more accurate reason for conserving fossil fuels is that their supply is limited and they contribute to environmental issues.

5. **Identifying the False Statement**:
- After analyzing all the statements, the fourth statement is misleading because it oversimplifies the reason for conserving fossil fuels. The focus should be on the limited supply and environmental impact rather than just energy output.

### Conclusion:
The false statement among the options is the fourth one, which oversimplifies the reasons for conserving fossil fuels.

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