A that is ddt it is a non biodegradable substance it only degardes 5% in a long sum of time approx a year so if it is not degarded properly it would damage the ground water by mixing into it

Radioactive substances are non-biodegradable waste that can potentially pollute the earth to dangerous levels of toxicity if not handled properly. Radioactive substances refer to materials that contain unstable atoms that can emit ionizing radiation such as alpha particles, beta particles, and gamma rays. These substances are produced through nuclear power generation, nuclear weapons testing, and various industrial applications.

1. Properties of Radioactive Substances:
- Radioactive substances can have a long half-life, which means they can remain hazardous for extended periods.
- They emit ionizing radiation, which can cause damage to living organisms, including humans, by disrupting or damaging cells and DNA.
- Radioactive materials can contaminate air, water, soil, and plants, leading to widespread pollution.

2. Environmental Impact:
- When not handled properly, radioactive substances can contaminate ecosystems and enter the food chain, affecting both plant and animal life.
- Exposure to high levels of ionizing radiation can lead to acute radiation sickness, genetic mutations, and an increased risk of cancer.
- Radioactive waste can persist in the environment for thousands of years, posing a long-term threat to future generations.

3. Improper Handling and Disposal:
- Improper disposal of radioactive waste can result in the release of radiation into the environment, leading to contamination of soil, water bodies, and the atmosphere.
- Inadequate storage and transportation of radioactive materials can increase the likelihood of accidents, leaks, or theft, further endangering public health and the environment.

4. Proper Handling and Disposal:
- Radioactive waste must be managed and stored in secure facilities designed to prevent leakage or release of radiation.
- Proper labeling, packaging, and transportation protocols should be followed to minimize the risk of accidents and unauthorized access.
- Long-term storage solutions, such as deep geological repositories, are being developed to safely isolate radioactive waste from the environment.

5. Regulation and Monitoring:
- Governments and international organizations have established regulations and guidelines for the safe handling, storage, and disposal of radioactive waste.
- Regular monitoring and inspections are conducted to ensure compliance with these regulations and to detect any potential leaks or breaches.

In conclusion, radioactive substances are non-biodegradable waste that can pose significant risks to the environment and human health if not handled properly. Strict regulations, proper handling, and secure storage are essential to prevent the pollution of the earth with toxic levels of radiation.