Reflection of Light CBSE Class 7 Physics (www.iDaaLearning.com)
Likes : 246 | Dislikes : 37 When a ray of light, while travelling from one optical medium to another optical medium(say, from air to glass) strikes the surface of…
Digestion in Human Beings 3D CBSE Class 7 Science (www.iDaaLearning.com)
Likes : 113708 | Dislikes : 9229 Human beings take food through mouth and digest it in specific organs for digestion. The undigested food is defecated. The food we take…