Class 10th Ncert Our Environment Editor,10th Class Algebra Practice Set 3.3 Union,10th Ncert 13.2 Us - And More
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Thus, when an organism makes the organic compound using the inorganic substance, it is called as producers. Example: Green plants produce their food by the method of photosynthesis. Consumers : When an organism depends on the producers for its nourishment or consumes the food directly or indirectly from the producers, then such organisms are called consumers. It can be classified into herbivorous, carnivorous, omnivores, and parasites.
Decomposers : Organisms that get the nutrient by decomposing the dead plants and animals are called decomposers. A decomposer breaks the complex organic substance into simple inorganic substances that can be used by other organisms. Example: Bacteria, fungi, etc.
Class 10 Our Environment also covers the concepts of food chains and food webs which are integral to the smooth functioning of any ecosystem. Organisms feed on one another for fulfilling their nourishment needs in the environment. These organisms constitute the biotic levels and form a food chain. Thus, a food chain can be described as a series of organisms wherein one organism eats another one. Every step of the food chain forms a trophic level that includes producers at the first level, primary consumers at the second level, secondary consumers at the third level, and tertiary consumers at the fourth level.
While studying Class 10 Our Environment notes, you must also go through the concept of the flow of energy in any ecosystem and environment.
For all the living organisms, food is the primary source of energy. When different components of the environment interact with each other, it creates a flow of energy that transmits from one component to another. Autotrophs or the producers capture the energy of the sunlight to produce food. This energy flows from autotrophs to heterotrophs and decomposers in a food chain, making a flow of energy.
However, during the transmission, the energy gets converted into other forms, and some energy gets lost in the transmission that cannot be used again. A flow of energy moves progressively throughout the trophic level and will always be unidirectional. It means that autotrophs cannot give back the energy to the sun, and the same applies to heterotrophs and decomposers. Moving further to the summary of the next sub-unit in Class 10 Our Environment notes, the topic of the Ozone Layer is an imperative one to understand.
Ozone is a molecule that contains three atoms of oxygen. While it is a deadly poison at the ground level, it plays a significant role at the higher levels of the atmosphere in protecting the earth.
It absorbs the UV radiation of the sun and protects the organisms from different types of severe health problems like skin cancer. The increased use of CFCs chlorofluorocarbons in appliances like refrigerators and fire extinguishers affects the ozone layer.
It is one of the reasons that are responsible for the depletion of the ozone layer. Thus, many modern-day appliances are CFC-free, which helps in sustaining the level of the ozone layer in the atmosphere. Careless waste disposal creates different environmental problems. Categorized as biodegradable or non-biodegradable, waste causes a hazardous impact on the surrounding when left undisposed.
The difference between the two types of waste is that Ncert 10th Class Ex 4.2 when a substance is easily broken down by biological processes and decomposed completely, it is said to be biodegradable but when a substance is not broken by the biological processes or decomposed it is said to be non-biodegradable.
With the increase in garbage Ncert Solutions Of Class 10th Maths Exercise 12.3 Days and waste materials, it is important to manage waste disposal by various means. The best ways to facilitate garbage management is through methods like biogas plants, sewage treatment plants, land fillings, recycling, etc. Now that you have gone through the Class 10 Our Environment notes, here are some important exam questions you must practice:.
Thus, we hope that our detailed Class 10 Our Environment notes help you understand the essentials of this chapter. Planning to opt for Science after 10th?
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Leave a Reply Cancel reply. Your email address will not be published. Ques 2: How can you help in reducing the problem of waste disposal? Give any two methods. Ques 1: Which of the following groups contain only biodegradable items? Ques 2: Which of the following constitute a food-chain? Ques 3: Which of the following are environment-friendly particles? Ques 5: Will the impact of removing all the organisms in trophic level be different for different trophic levels?
Can the organisms of any trophic level be removed without causing any damage to the Ncert Solutions Class 10th Chemistry Chapter 1 Question ecosystem? Ques 6: What is biological magnification? Will the levels of this magnification be different at different levels of the ecosystem? Ques 7: What are the problems caused by the non-biodegradable wastes that we generate? Ques 8: If all the waste we generate is biodegradable, will this have no impact on the environment? Ques 9: Why is damage to the ozone layer a cause for concern? What steps are being taken to limit this damage?
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