Improvement In Food Resources — Science STD 9 — Question

There are three small bones in the middle ear-anvil, hammer and stirrup:
Which of these bones is in touch with oval window?

Which of the Kepler’s laws of planetary motion led Newton to establish the inverse-square rule for gravitational force between two bodies?

Discuss the implications of the following statement:
“It is interesting to note that poultry is India’s most efficient converter of low fibre food stuff (which is unfit for human consumption) into highly nutritious animal protein food.”

What is location and function of companion cells?

What changes continuously in uniform circular motion?

Define the term “tissue”.

Name the unit in which the radius of an atom is usually expressed.

What is the effect force, when it is applied in the following cases?
A ball is hit with a bat.