What is carbon dioxide and Water vapour?

Carbon dioxide

Carbon dioxide is a colourless and odourless gas. It has a slightly sour taste. Carbon dioxide is moderately soluble in water. Carbon dioxide gas neither burns nor supports burning. Carbon dioxide extinguishes a burning fire. Plants and animals consume oxygen from air for respiration and produce carbon dioxide. Plant and animal matter burns by consuming oxygen from air and produces mainly carbon dioxide and a few other gases. If some material is burning in a closed room, we feel suffocated. This is due to the accumulation of excess of carbon dioxide (and some carbon monoxide) in the air of the room which is produced by the burning material.

Air contains only about 0.03 per cent of carbon dioxide gas. Though the amount of carbon dioxide in air is comparatively small but it is a very important component of air. The carbon dioxide gas present in air is important to green plants. Green plants need carbon dioxide gas to make food. In sunlight, green plants use carbon dioxide from air and water from soil to make food by the process of photosynthesis. So, all the food which animals (including human beings) eat is made from carbon dioxide gas of the air. Without carbon dioxide in air there would be no plants or animals on the earth. The plants which live in water use. the carbon dioxide dissolved in water for their needs.

WATER VAPOUR

Air also contains water vapour. We cannot see 'water vapour' present in air because it is "water in the form of a gas. We performed an activity in the previous chapter to show the presence of water vapour in air. When air comes in contact with a cool surface (as that of a glass containing ice-cold water), the water vapour present in it condenses to form tiny drops of liquid water on the cold surface. Water vapour comes into the air from the evaporation of water present on the earth (in ponds, lakes, rivers and oceans, etc.) and from transpiration. The presence of water vapour in air is important for the working of water cycle in nature. This is because it is water vapour present in air which rises high in the sky alongwith hot air, gets cooled, condenses to form clouds and then brings rain on the earth.

What is WORD WIDE WEB?

WWW {WORD WIDE WEB} World Wide Web, which is also known as a Web, is a collection of web sites or web pages stored in web servers and connected to local computers through the internet. These websites contain text pages, digital images, audios, videos, etc. Users can access the content of these sites from any part of the world over the internet using their devices such as computers, laptops, cell phones, etc. The WWW, along with internet, enables the retrieval and display of text and media to your device. The building blocks of the Web are web pages which are formatted in HTML and connected by links called "hypertext" or hyperlinks and accessed by HTTP These links are electronic connections that link related pieces of information so that users can access t thihe desired information quickly. Hypertext offers the advantage to select a word or phrase from text and thus to access other pages that provide additional information related to that word or phrase.A web page is

What is computer basic information?

What might we at any point instruct you? PC Rudiments: What is a PC? What is a PC? A PC is an electronic gadget that controls data, or information. It can store, recover, and process information. You may definitely realize that you can utilize a PC to type reports, send email, mess around, and peruse the Internet. You can likewise utilize it to alter or make accounting sheets, introductions, and even recordings.Watch the video beneath to find out about various sorts of PCs.Searching for the old rendition of this video? You can in any case see it here. Equipment versus programming Before we discuss various sorts of PCs, we should discuss two things all PCs share for all intents and purpose: equipment and programming.Equipment is any essential for your PC that has an actual design, like the console or mouse. It additionally incorporates the PC's all's inside parts, which you can find in the picture underneath.seeing equipment .Programming is any arrangement of directions that

What are life process?

WHAT ARE LIFE PROCESSES? The maintenance functions of living organisms must go on even when they are not doing anything particular. Even when we are just sitting in class even if we are just asleep, this maintenance job has to go on The processes which together perform this maintenance job an We processes . Since these maintenance processes are needed to prevent damage and break-down energy is needed for them. This energy comes from outside the body of the mdhadual organism. So there must be a process to transfer a source of energy from outside the body of the organism which we call food, to the inside, a process we commonly call nutrition If the body size of the organisins is to grow, additional raw material wit also be needed from outside. Since life on earth depends on carbon- based molecules most of these food sources are also carbon-based Depending on the complexity of these carbon sources, different organisms can then use different kinds of nutritional processes The outside sourc

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