The most powerful agents of marine erosion are waves. Their origin is due to the sweeping of...
Day: January 28, 2023
The action of the wind passing over a stretch of sea causes waves to develop and when...
Fish and tadpoles are aquatic vertebrates. They possess gills for gaseous exchange. Gills of fish Fish...
Planaria is a free-living, flat, slender and small worm. The digestive tract consists of a ventrally placed...
