Our Environment Class 10 PPT

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1. Effect of adding waste to the environment :-    Human activities produce a lot of waste materials which are thrown away into the environment. These wastes cause pollution of air, water and soil.   The waste materials produced are of two main types. They are biodegradable wastes and non biodegradable wastes. i) Biodegradable wastes :- are wastes which are decomposed into harmless substances by microorganisms.    Eg :- vegetables, fruits, pulses, cereals, cotton, jute, wool, wood,  leather, paper, animal dung, animal bones etc. ii) Non biodegradable wastes :- are wastes which are not decomposed by microorganisms.    Eg :- polythene bags, plastics, synthetic fibres, glass, metals, synthetic rubber, insecticides, pesticides etc.  
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1. Effect of adding waste to the environment :-    Human activities produce a lot of waste materials which are thrown away into the environment. These wastes cause pollution of air, water and soil.   The waste materials produced are of two main types. They are biodegradable wastes and non biodegradable wastes. i) Biodegradable wastes :- are wastes which are decomposed into harmless substances by microorganisms.    Eg :- vegetables, fruits, pulses, cereals, cotton, jute, wool, wood,  leather, paper, animal dung, animal bones etc. ii) Non biodegradable wastes :- are wastes which are not decomposed by microorganisms.    Eg :- polythene bags, plastics, synthetic fibres, glass, metals, synthetic rubber, insecticides, pesticides etc.  2. Ecosystem and its components :- a) Ecosystem :-    An ecosystem consists of all the living organisms in an      area along with the non living components and their interaction.     There are different types of ecosystems. They are :-  i) Natural ecosystems  :- like forests, deserts, grass lands, mountains,      ponds, lakes, rivers, oceans etc.  ii) Artificial ecosystems :- like gardens, parks, crop fields, aquarium, zoo etc. b) Components of an ecosystem :-     An ecosystem consists of two main components. They are biotic and abiotic      components. i) Biotic components :- are the living components like plants, animals and     microorganisms. They consist of producers, consumers and decomposers.    Producers  :- are green plants which produce food by photosynthesis.    Consumers :- are herbivores which get their food directly from plants,     carnivores which get their food indirectly from plants and omnivores which     get their food directly or indirectly from plants.    Decomposers :- are microorganisms which decompose dead plants and     animals. They decompose complex organic substances into simple inorganic     substances in the soil which are again used by plants. ii) Abiotic components :- are the non living components like air, water, soil,     minerals,  sunlight , temperature, wind etc.
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1. Effect of adding waste to the environment :-    Human activities produce a lot of waste materials which are thrown away into the environment. These wastes cause pollution of air, water and soil.   The waste materials produced are of two main types. They are biodegradable wastes and non biodegradable wastes. i) Biodegradable wastes :- are wastes which are decomposed into harmless substances by microorganisms.    Eg :- vegetables, fruits, pulses, cereals, cotton, jute, wool, wood,  leather, paper, animal dung, animal bones etc. ii) Non biodegradable wastes :- are wastes which are not decomposed by microorganisms.    Eg :- polythene bags, plastics, synthetic fibres, glass, metals, synthetic rubber, insecticides, pesticides etc.  2. Ecosystem and its components :- a) Ecosystem :-    An ecosystem consists of all the living organisms in an      area along with the non living components and their interaction.     There are different types of ecosystems. They are :-  i) Natural ecosystems  :- like forests, deserts, grass lands, mountains,      ponds, lakes, rivers, oceans etc.  ii) Artificial ecosystems :- like gardens, parks, crop fields, aquarium, zoo etc. b) Components of an ecosystem :-     An ecosystem consists of two main components. They are biotic and abiotic      components. i) Biotic components :- are the living components like plants, animals and     microorganisms. They consist of producers, consumers and decomposers.    Producers  :- are green plants which produce food by photosynthesis.    Consumers :- are herbivores which get their food directly from plants,     carnivores which get their food indirectly from plants and omnivores which     get their food directly or indirectly from plants.    Decomposers :- are microorganisms which decompose dead plants and     animals. They decompose complex organic substances into simple inorganic     substances in the soil which are again used by plants. ii) Abiotic components :- are the non living components like air, water, soil,     minerals,  sunlight , temperature, wind etc. 3a) Food chain :-     A food chain is the flow of food energy from one organism to the next and to 
the next and so on. They usually start with a producer (plants) and end with a 
carnivore. In a food chain an organism gets food from one group of organisms.                        eaten by                         eaten by Eg:-  Grass                      Deer                          Lion         (producer)              (primary consumer)       (secondary consumer)                         eaten by                        eaten by                       eaten by          Grass                  Insects                     Frog                       Snake      (producer)           (primary consumer)      (secondary consumer)     (tertiary consumer)                  eaten by                 eaten by                      eaten by                        eaten by    Grass             Moth                     Frog                     Snake                 Hawk (producer)   (primary consumer)    (secondary consumer)   (tertiary consumer)   (quarternary consumer) 
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1. Effect of adding waste to the environment :-    Human activities produce a lot of waste materials which are thrown away into the environment. These wastes cause pollution of air, water and soil.   The waste materials produced are of two main types. They are biodegradable wastes and non biodegradable wastes. i) Biodegradable wastes :- are wastes which are decomposed into harmless substances by microorganisms.    Eg :- vegetables, fruits, pulses, cereals, cotton, jute, wool, wood,  leather, paper, animal dung, animal bones etc. ii) Non biodegradable wastes :- are wastes which are not decomposed by microorganisms.    Eg :- polythene bags, plastics, synthetic fibres, glass, metals, synthetic rubber, insecticides, pesticides etc.  2. Ecosystem and its components :- a) Ecosystem :-    An ecosystem consists of all the living organisms in an      area along with the non living components and their interaction.     There are different types of ecosystems. They are :-  i) Natural ecosystems  :- like forests, deserts, grass lands, mountains,      ponds, lakes, rivers, oceans etc.  ii) Artificial ecosystems :- like gardens, parks, crop fields, aquarium, zoo etc. b) Components of an ecosystem :-     An ecosystem consists of two main components. They are biotic and abiotic      components. i) Biotic components :- are the living components like plants, animals and     microorganisms. They consist of producers, consumers and decomposers.    Producers  :- are green plants which produce food by photosynthesis.    Consumers :- are herbivores which get their food directly from plants,     carnivores which get their food indirectly from plants and omnivores which     get their food directly or indirectly from plants.    Decomposers :- are microorganisms which decompose dead plants and     animals. They decompose complex organic substances into simple inorganic     substances in the soil which are again used by plants. ii) Abiotic components :- are the non living components like air, water, soil,     minerals,  sunlight , temperature, wind etc. 3a) Food chain :-     A food chain is the flow of food energy from one organism to the next and to 
the next and so on. They usually start with a producer (plants) and end with a 
carnivore. In a food chain an organism gets food from one group of organisms.                        eaten by                         eaten by Eg:-  Grass                      Deer                          Lion         (producer)              (primary consumer)       (secondary consumer)                         eaten by                        eaten by                       eaten by          Grass                  Insects                     Frog                       Snake      (producer)           (primary consumer)      (secondary consumer)     (tertiary consumer)                  eaten by                 eaten by                      eaten by                        eaten by    Grass             Moth                     Frog                     Snake                 Hawk (producer)   (primary consumer)    (secondary consumer)   (tertiary consumer)   (quarternary consumer) 
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1. Effect of adding waste to the environment :-    Human activities produce a lot of waste materials which are thrown away into the environment. These wastes cause pollution of air, water and soil.   The waste materials produced are of two main types. They are biodegradable wastes and non biodegradable wastes. i) Biodegradable wastes :- are wastes which are decomposed into harmless substances by microorganisms.    Eg :- vegetables, fruits, pulses, cereals, cotton, jute, wool, wood,  leather, paper, animal dung, animal bones etc. ii) Non biodegradable wastes :- are wastes which are not decomposed by microorganisms.    Eg :- polythene bags, plastics, synthetic fibres, glass, metals, synthetic rubber, insecticides, pesticides etc.  2. Ecosystem and its components :- a) Ecosystem :-    An ecosystem consists of all the living organisms in an      area along with the non living components and their interaction.     There are different types of ecosystems. They are :-  i) Natural ecosystems  :- like forests, deserts, grass lands, mountains,      ponds, lakes, rivers, oceans etc.  ii) Artificial ecosystems :- like gardens, parks, crop fields, aquarium, zoo etc. b) Components of an ecosystem :-     An ecosystem consists of two main components. They are biotic and abiotic      components. i) Biotic components :- are the living components like plants, animals and     microorganisms. They consist of producers, consumers and decomposers.    Producers  :- are green plants which produce food by photosynthesis.    Consumers :- are herbivores which get their food directly from plants,     carnivores which get their food indirectly from plants and omnivores which     get their food directly or indirectly from plants.    Decomposers :- are microorganisms which decompose dead plants and     animals. They decompose complex organic substances into simple inorganic     substances in the soil which are again used by plants. ii) Abiotic components :- are the non living components like air, water, soil,     minerals,  sunlight , temperature, wind etc. 3a) Food chain :-     A food chain is the flow of food energy from one organism to the next and to 
the next and so on. They usually start with a producer (plants) and end with a 
carnivore. In a food chain an organism gets food from one group of organisms.                        eaten by                         eaten by Eg:-  Grass                      Deer                          Lion         (producer)              (primary consumer)       (secondary consumer)                         eaten by                        eaten by                       eaten by          Grass                  Insects                     Frog                       Snake      (producer)           (primary consumer)      (secondary consumer)     (tertiary consumer)                  eaten by                 eaten by                      eaten by                        eaten by    Grass             Moth                     Frog                     Snake                 Hawk (producer)   (primary consumer)    (secondary consumer)   (tertiary consumer)   (quarternary consumer) b) Food web :-    Food web is a group of several interconnected food chains. In a food 
web an organism gets food from more than one group of organisms.