Why leaves become yellow and how steam comes out of our mouth

Feb 12, 2021 12:10 | Feature & Viewpoint

Facts about India


 Ahmednagar Fort (Bhuekot Killa) - Built by Ahmed Nizam Shah in 1490, this is one of the best-designed and most impregnable forts in India. In 1803, it was taken by the British during the Second Anglo-Maratha War. It was used as a prison during the British Raj. Currently, the fort is under the administration of the Armoured Corps of the Indian Army.



Why leaves become yellow in the absence of light

In absence of light, photosynthesis does not take place. So synthesis of starch does not occur, so in dark the leaves become yellow or pale green. The most stable pigment is chlorophyll




 How it works


How steam comes out of  our mouth in winter/extremely cold areas.
When you exhale, the hot air comes out from the lungs heats-up the tiny water droplets present in the atmosphere. So it starts condensation. This is the reason why it looks steam coming out of our mouth or nose while exhaling.🗣️