Give some examples of 2-Dimensional objects.

Name some 3-Dimensional objects.

Give some examples for corrosion.

Give some examples of terrestrial habitats.

Define tuberous roots.Give some examples of tuberous roots.

What are radio isotopes ? Give some examples of radio isotopes.

Give some examples of pesticides commonly used by farmers.

Give some common examples of natural fibres.

Give some examples of situations in plants responding to a certain stimulus.

Some metals reacts oxygen to form their oxides. It is serious problem. Give some examples for oxidation of metals and write balanced equations.