Question

The disposal of radioactive materials must be carefully managed because they ________.

1) are highly toxic to humans
2) can cause environmental pollution
3) have long half-lives
4) all of the above

Answer 1

The disposal of radioactive materials must be carefully managed because they are highly toxic to humans, can cause environmental pollution, and have long half-lives. Option 4, all of the above is correct.

Step-by-step explanation:

Radioactive materials must be carefully managed due to their toxicity, potential to cause environmental pollution, and long half-lives. They present serious health risks and can remain hazardous for thousands of years, requiring strict handling and storage regulations.

Radioactive waste, such as uranium mill tailings and spent nuclear fuel, poses significant risks to health and the environment. These materials can contaminate air, water, and food, and can remain hazardous for thousands of years. Handling and storage regulations are in place to prevent exposure to the high-energy particles emitted by radioactive waste, which can alter DNA and cause cancer and birth defects. The potential for an uncontrolled nuclear reaction and the risks associated with nuclear proliferation also necessitate strict management of these materials.

Hence, the correct answer is Option 4.