Why can the pesticides not be removed from food grains by washing ?

Sulphur can be remove from ore by

Which of the following is removed from food during irradiation?

What will happen if herbivores are removed from a grass type food chain ?

Urea from the blood can be removed by

Grease (or oil) can be removed from the surface of clothes by washing with soap water. Which one of the following is true in the context of the above statement?

Describe how drying of food grains is done.

If a single plant species is removed from a food web then mose likely

A food chain consists of fish, larvae , phytoplanktons and birds. The level of pesticides in water in which the fish, larvae and phytoplanktons live is quite high. (a) In which organisms the pesticides enter from the polluted water ? What is the level of organisms known as ? (b) Which organism will have the maximum amount of pesticides accumulated through the food chain ? What is this process known as ? (c) Write the food chain comprising all the organisms mentioned above. (d) Which other organism you could write in place of bird in the above food chain ?

Why should the harvested grains be protected from moisture?