America's radioactive waste may be targeted in terrorist attacks.

Wastes have polluted portions of our water.

The second is the affinity with environment. By utilizing natural energy and reducing wastes, we have to make houses which harmonize with ecology.

The government should do away with these regulations.

Industrial wastes pollute the earth.

Factory waste has polluted the sea.

Factory waste sometimes pollutes our rivers.

Another interesting source of energy is the heat that can be recovered from radioactive waste material.

They have demanded that all copies of the book be destroyed.

Where should we dispose of the waste?

The river is polluted by waste from houses and factories.

The factory decided to do away with the old machinery.

The factory waste gave rise to serious environmental pollution.

This river is polluted with factory waste.

Together with Britain, France may ban imports of waste from Germany.

The problem of radioactive waste remains unresolved.