Write some methods of storage of grains used at home ?
The polymers are finding extensive use in our day today life. Natural polymers are biodegradable but most of the synthetic polymers are non-biodegradable. This is causing a serious environmental problem for the waste disposal. With the increasing use of polymers, the problem of dispersal of waste is also causing alarming curse. Answer the following question : Name one synthetic biodegradable polymer.
Suggest some methods to prevent the growth of moulds.
Environmental pollution is undesirable change in the physical, chemical or biological characteristics of air, water or soil. It is caused by production and accumulation of wastes which may be industrial or domestic or agricultural or commercial. So the safe disposal of these wastes is essential to prevent environmental pollution. Answer the following questions related to managment of wastes: Differentiate between incineration and pyrolysis.
Suggest two methods to find out wind direction at a given place .
