State True or False:
From surface 30-40 cm deep layer of Earth in which plants can grow is called soil.

The top layer of the earth's surface over which plants are grown is called

A geostationary satellite is nearly at a height of h = 6 R from the surface of the earth where R is the radius of the earth. Calculate the area on the surface of the earth in which the communication can be made using this satellite.

State True or False. Substances which allow charges to pass through them are called conductors.

State true (T) or false (F). The Earth is fourth planet from the Sun. __

State true or false : (i) Juvenile phase can be known as vegetative phase in all plants. (ii) Mango is polycarpic plant.

State true or false: The matrix of bone is present in the form of layers called lacunae

From which layer of soil do plants get their nutrients?

State True or False Triangle with length of sides as 5 cm, 6 cm and 11 cm can be constructed.