Category: Science

  1. Reflection of sound
  2. Refraction of sound
  3. Diffraction of sound
  4. Polarization of sound

Reflection: change in direction of waves when they bounce off a barrier.
Refraction: change in the direction of waves as they pass from one medium to another.

  1. Sleeping inducing drug
  2. Unit of heredity
  3. Kind of Vitamin
  4. Type of body cell

Genes are the units of heredity and are the instructions that make up the body’s blueprint.
heredity meaning: warasit