Which among the following statements is/are correct about Dust particles in the Earth’s atmosphere?Higher concentration of dust particles is found in equatorial and polar regionsThey are generally found in the lower layers of the atmosphereSelect the correct code from the options given below:

• A. Both 1 & 2
• B. Only 2
• C. Neither 1 & 2
• D. Only 1

Answer: (B)

Dust particles are generally found in the lower layers of the atmosphere. They are found in the form of sand, smoke-soot, oceanic salt, ash, pollen, etc. Higher concentration of dust particles is found in the sub tropical and temperate regions due to dry winds.