Give two examples of each.
Fertilizers, Bacteria ,Fungi ,Protozoa , Algae , Viruses, Fossil Fuels , Inflammable Substances,
Migratory birds, Noncontact forces, Contact forces, Lubricants, Fluids
Answers
Urea and Potassium chloride.
Listeriosis and Coccus.
Yeast and mushrooms.
Amoeba and lamblia.
Green algae and diatoms.
Corona and HIV.
Coal and petrol.
Petrol and LPG.
Siberian Cranes and strock.
Gravitational force and nuclear force.
Normal force and frictional force.
Oil and soap.
Blood and honey.
Fertilizers - Fertilizers are the substance which helps to improve the fertility of the soil and help the plants to grow.
Lubricants - The lubricants are the substances which decrease the friction of the surface and make it smooth and slippy.
Fluids - Fluids are the substances which can flow easily and change their shapes.
Fossil fuels - Fossil fuels are the substances which formed by the decomposition of an organic material.
Explanation:
Fertilizers: Urea, Sludge
Bacteria: Bacillus, Spirillum
Fungi: Yeast, Mushrooms
Protozoa: Amoeba, Paramecia
Algae: Spirogyra, Diatom
Viruses: Smallpox, Measles
Fossil fuels: Oil, Coal
Inflammable Substances: Liquified Petroleum Gas (LPG), Petrol
Migratory birds: Great grey owl, Siberian Cranes
Noncontact forces: Falling of apple and raindrops (Gravitational and Magnetic force)
Contact forces: Air resistance, Normal force
Lubricants: Graphite, Petroleum jellies
Fluids: Oxygen (gas), Water (liquid)