Can you answer this?

At a time when it is cloudy. there may be frequent thunder and lightning. The sound of thunder takes some time to reach you after you see the lightning . Can you answer why this happens ?

In, D and E are two points on BC such that BD = De = EC. Show that ar (ABD) = ar (ADE) = ar (AEC). Can you now answer the question that you have left in the 'introduction' of this chapter, whether the field of Budhia has been actually divided into three parts of equal area?

Can you answer above question using concepts of refraction through lenses ?

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In the following Figure, D and E are two points on BC such that BD = DE = EC . Show that ar (ABD) = ar (ADE) = ar(AEC) can you now answer the equation that you left in the "Introduction " of the capther, whether the filed of Budhia has been actually divided into three parts of equal area ?

If you don’t use this chemicals , how can we get a good crop? How can we increase production? Is there an answer to this question? What could it be?

Two packets are filled with brass and sand. Can you separate them into homogeneous and heterogeneous mixture. Justify your answer.