(19) When the sun's ray enter the room, we see a very small particles 'X' of gas 'Y' floating in the air. These very small
particles are found in a random motion. Answer the following question.
(1) What will be the particles 'X' ?
(ii) Give the name of 'Y'.
(1) Give the reason for the mobility of particle X'. (iv) Which type of motion is done by particle X ?
(v) Which properties of matter are displayed in this phenomenon?
(vi) The effect seen here is given by the name of which scientist ?
00 Cive the difference between · Gymnosnerms and angiosperms
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Answer: are microorganism
Explanation: the
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