World and Animal
• The place where an animal grows or is found naturally is called its habitat.
• There are five main habitats on the earth—forest, desert, polar region, ocean and freshwater.
• In order to adjust to the different kinds of environmental conditions of the habitat, animals have different types of body coverings. Feathers, fur, scales and shell are some of them.
• Based on their eating habits, animals are classified as herbivores, carnivores, scavengers and omnivores.
• Breathing is an important process for all living beings. During this, an exchange of gases takes place, i.e., oxygen is inhaled and carbon dioxide is exhaled.
• Different animals have different breathing organs. Insects breathe through spiracles, fish breathe through gills, birds, reptiles and mammals breathe through lungs, and amphibians breathe through gills, lungs and moist skin.
• The movement of animals from one place to another is called locomotion. Animals use different body parts to move.
• Migration is the movement of an animal from one place to another in response to changes in weather, habitat or availability of food.
• Arctic desert, Sahara desert and Gobi desert are some of the famous deserts of the world.
• The weight of a bird’s feathers is more than that of its skeleton.
• Microscopic organisms use their body surface to breathe.
• The word migration comes from the Latin word ‘migratus’ which means ‘to change’.
• There is another category of animals based on eating habits which is known as decomposers. These are very small organisms which feed on dead and decaying plants and animals.
• Migrating ducks and geese often fly in V-shape formations which help them in saving energy.
No comments:
Post a Comment