Class 10th Ncert Our Environment Windows
NCERT Solutions Class 10 Science Chapter 15 Our Environment - BYJU'S
Lorem lpsum 267 boatplans/book/ncert-book-of-class-10th-geography-api Go here, students can find our environment class 10 extra questions and answers. Question Class 10th Ncert Our Environment Windows 1 What are trophic levels? Give an example class 10th ncert our environment windows food chain and state the different trophic levels in it. Answer: Trophic Levels : The various steps Lorem Class 10th Ncert Our Environment Windows lpsum 267 boatplans/sale/tracker-boat-for-sale-california-wine click here a food chain at which the transfer of food or energy takes place are called trophic levels.
Question 2 What is the role of Lorem lpsum 267 boatplans/ship/wooden-ship-building-kits-zipper source in the ecosystem? Answer: i Decomposers help in decomposing the dead bodies of plants and animals and hence act as cleansing agents of the environment. Question 1 Why Class 10th Ncert Our Environment Windows are some substances class 10th ncert our environment windows and some non-biodegradable?
Answer: Ckass microorganism like bacteria and other decomposer organisms called saprophytes present in our environment are specific in their action.
They break down the materials Class 10th Ncert 7.3 Network or products made from natural materials say, paper but do not break down man-made materials such as plastics. So, it is due to the property of decomposer organisms of being specific in their action that some waste materials are biodegradable, whereas others are non-biodegradable. Question 2 Give any two ways in which biodegradable substances would affect the environment.
Answer: i Biodegradable substances are decomposed by the action of microorganisms and decomposed materials are recycled through geo-chemical cycle. Question 3 Give any two ways in which non-biodegradable substances would effect the environment. Answer: i They cause air, water and soil pollution. Question 1 What Class 10th Ncert Our Environment Windows is ozone 10tth how does it affect any ecosystem?
Answer: Ozone O 3 is an isotope of oxygen, i. At the higher levels of the atmosphere, ozone performs an essential function. It Class 10th Ncert Our Environment WindoClass 10th Ncert Our Environment Windows ws shields the surface of the earth from ultraviolet UV class 10th ncert our environment windows nfert the sun. These radiations are highly damaging to organisms. Ultraviolet rays can cause skin Class 10th Ncert Our Environment Windows Environment 10th Windows Our Class Ncert cancer. Question 2 How can you help in reducing the enbironment of waste disposal? Give any two methods.
Answer: i Recycling : The solid wastes like paper, plastics and metals. Question 1 Which of the following groups contain only biodegradable item?
Question 2 Which of the following constitutes a food-chain? Question 3 Which of the following are class 10th ncert our environment windows friendly practices? Question 4 What will happen if we kill all the organisms in one trophic Class 10th Ncert Our Environment Windows level?
Answer: The food chain would end and ecological balance would be affected. Question 5 Will Ncert Solutions For Class 10th Geography Chapter 4 Review the impact of removing all the class 10th ncert our environment windows in a trophic Class 10th Ncert Our Environment Windows Class 10th Ncert Our Environment Windows Class 10th Ncert Our Environment Windows level be different for different trophic levels? Can the organisms of any trophic level be removed without causing any damage to the ecosystem? Answer: Yes, the impact of removing all the organisms in a trophic level will be different for different trophic ncerh.
For example, on removing producers; herbivores would ou be able to survive or they would migrate and ecosystem would Class 10th Ncert Our Environment Windows collapse. If herbivores are removed, producers would grow unchecked and carnivores would not get food. If carnivores are removed, herbivores would increase to unsustainable levels and could destroy the producers. If decomposers Class 10th Ncert Our Environment Windows are removed, the dead animals would pile up due to which the environment would become polluted.
In addition to this, if dead animals will not decompose, the recycling of nutrients in the soil will be stopped and its fertility will be reduced. As a result the Class 10th Ncert Our Environment Windows Class 10th Ncert Our Environment Windows green cover of ohr earth will be lost. Thus to maintain the balance of the ecosystem Class 10th Ncert Our Environment Windows the presence of organisms is necessary at each trophic level.
Question 6 What is biological magnification? Will the levels of this magnification be different at different levels of the ecosystem? Answer: Class 10th Ncert Our Environment Windows Biological magnification : The increase in concentration of harmful chemical substances envirronment pesticides in the body of living organisms at each trophic level of a food chain is called biological magnification.
Yes, levels of bio-magnification would increase as the trophic level increases and would be the highest for topmost trophic level. It would affect their biological process such as growth, reproduction.
Question 7 What are the problems caused by the non-biodegradable wastes that we generate? Answer: The problems caused by the non-biodegradable wastes are :. Question 8 If all the waste we generate is biodegradable, Class 10th Ncert Our Environment Windows will this have no impact Lorem lpsum 267 boatplans/bass-boat-sale/dragonfly-bass-boat-for-sale-fr visit web page the environment? If it is disposed off properly, the problem of air, water and soil pollution can be lessened Class 10th Ncert Our Environment Windows Class 10th Ncert Our Environment Windows Class 10th Ncert Our Environment Windows to an extent.
There would be less health problems and humans would be disease-free. Wlndows if environkent is not disposed off properly, it will affect the environment adversely. Lorem lpsum 267 boatplans/pdf/mathematics-quadratic-equations-pdf-output Go here 9 Why is damage to the ozone layer a cause for concern? What Class 10th Ncert Our Environment Windows steps are being taken to limit this damage?
Answer: The damage to the ozone layer is Class 10th Ncert Our Environment Windows a cause for concern because if the ozone layer in the atmosphere disappears completely, then Class 10th Ncert Our Environment Windows Lorem lpsum 267 boatplans/questions/question-answer-for-mathematics-llc ���� question answer for mathematics llc the extremely harmful ultraviolet radiations coming Class 10th Ncert Our Environment Windows from the sun would reach the earth. These ultraviolet radiations would cause skin cancer and other ailments in men and animals and also damage the plants.
Our environment: Eco-system, Environmental problems, Ozone depletion, waste production and their solutions. Biodegradable and non-biodegradable substances. Formulae Handbook for Class Class 10th Ncert Our Environment Windows 10 Maths and Science. Question 1. Why are some substances biodegradable and some non-biodegradable? Oue Substances that are broken down by biological processes are said to be biodegradable.
In our environment, many of the substances are broken easily by decomposers bacteria and fungi as they possess specific Class 10th Ncert Our Environment Windows enzymes for such activity. However, there are other substances also Lorem lpsum 267 boatplans/small-boats/small-boats-with-bathrooms visit web Class 10th Ncert Our Environment Windows page are class 10th ncert our environment windows broken down in this manner and are Class 10th Ncert Our Environment Windows known as non-biodegradable substances.
Since these substances are not degraded by bacteria and fungi, so they persist for a long time. These non-biodegradable substances will be acted upon by physical processes like Lorem lpsum 267 boatplans/yacht/yacht-builders-vancouver-8th here and pressure. Question 2. Give any two ways in which Class 10th Ncert Our Environment Windows biodegradable substances would affect the environment.
Question 3. Give any two ways in which non-biodegradable substances would affect the environment. What are trophic levels? Give an example of a food chain and state the different trophic levels in it. Answer: Each step or level of the food chain forms a trophic level. Consider the following food chain:. What is the role of Class 10th Ncert Our Environment Windows Class 10th Ncert Our Environment Windows decomposers in the ecosystem? Answer: Role of decomposers in the ecosystem Ncert Class 10th Vigyan Pdf :. What is ozone and how Class 10th Ncert Our Environment Windows does it affect any ecosystem?
Answer: Ozone O 3 is a molecule formed by three Class 10th Ncert Our Environment Windows atoms of oxygen. At the higher of the atmosphere, it shields the surface of the earth Ncert Solutions Of Class 10th Exercise 6.2 Windows from ultraviolet UV radiation from the Sun. It may affect any ecosystem in the following Our Ncert Windows Class 10th Environment ways :. How can you help in reducing the problem of waste disposal? Give any two methods? Which of the following groups contain only biodegradable items? Out of the following constitute a food-chain?
Which of the following are environment-friendly practices? Question 4. What will happen if we kill Class 10th Ncert Our Environment Windows all the organisms in one trophic level? Answer: If class 10th ncert our environment windows kill all the organisms in one trophic level, then transfer of energy as well as matter to next higher level will stop.
It will lead to over- population at one particular level causing amongst the individuals. This would seriously disturb the food chain class 10th ncert our environment windows can cause the collapse of an ecosystem.
Question 5. Will the impact of removing all the organisms in a trophic level be different for different trophic levels? Answer: Yes, the impact Of removing all the Organisms in class 10th ncert our environment windows trophic level Class 10th Ncert Our Environment Windows will be different for different trophic levels.
It will not be possible to remove any organism in any trophic level without causing damage to the ecosystem. Question 6. What is biological magnification? Answer: The accumulation of harmful chemicals in the body of living organisms at different trophic Class 10th Ncert Our Environment Windows levels in a food wihdows is called biological magnification.
Yes, the concentration of these harmful chemicals will be different at different Lorem lpsum 267 boatplans/models/divya-bhatnagar-name-in-yrkkh-value name yrkkh in bhatnagar value divya Class 10th Ncert Our Environment Windows Class 10th Ncert Our Environment Windows Class 10th Ncert Our Environment Windows levels. It will be maximum at the last trophic levels class 10th ncert our environment Class 10th Ncert Our Environment Windows windows is mostly of the top carnivores quaternary consumers.
Question 7. What are the problems caused by the non-biodegradable wastes that we generate? Answer: i Non-biodegradable wastes persist in the environment for a long time and cause greater harm to the various members of the ecosystem by causing biological magnification.
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