(a) Diatoms are an important source of food to aquatic animals.
(b) Diatom deposits are often accompained by petroleum fields.
(c) Diatomite is porous and chemically inert,therefore used in filtration of sugar, alcohols and antibiotics.
(d) It is also employed as a cleansing agent in tooth pastes and metal polishes.
(e) It is also employed as insulation material in refrigerators, boilers and furnaces.