Explain biofuel production with the help of a diagram

Solid biofuel

Explain the following with the help of a diagram: Myopia or Nearsightedness

Explain the following with the help of a diagram: Hypermetropia or Farsightedness

Explain the following with the help of a diagram: Compound microscope

Explain the following with the help of a diagram: Explain the working of an astronomical telescope using refraction of light.

Explain sigmoid growth curve with the help of diagram.

Explain the formation of transgenic potatoes with the help of a diagram.

Answer the following : Explain the construction and working of a periscope with the help of a diagram .

Why are multiple colours observed over a thin film of oil floating on water? Explain with the help of a diagram.

Answer the following : Explain in detail about the electric bell with the help of a diagram .