Mechanical and chemical methods are being used, but they are only temporarily fixing the situation.

Purely chemical methods had become outdated and had lost some of their intellectual appeal.

Water pollution may be analyzed through several broad categories of methods: physical, chemical and biological.

Conventional physical and chemical methods can leave the soil structure unsuitable for cultivation.

If more rapid treatment is required, biocontrol should be used in conjunction with mechanical and chemical methods as part of an integrated management plan.

The creeper can be controlled or eliminated by a combination of physical and chemical methods.

Similar to microscopes, you need to understand how chemical methods work to have an idea of what their limit of detection would be.

Mechanical or chemical methods can be used for effective filtration techniques.

Both physical and chemical methods for liquefaction of sputum have been developed.

Biological, technical and chemical methods are balanced carefully taking into account the protection of the environment, profitability and social requirements.