Aleesha Rehman on Nearpeer Intermediate (FSc) Common Room

Aoa Resubmition of my assignment as you said sir , after checking my assignment. Because I didn't use the proper word pollen plant. Jazak Allah hu Khair Answer : *Discovery*: In 1927 *Scientist*: By Robert Brown He was a botanist *Observation*: He observed that tiny particles of pollen plants were moving randomly in a liquid. They were classified as dust particles. This was done under a microscope. These particles follow a zigzag random motion. Due to collisions their random motion increase.