This ppt is for std 8 students from ssc board to make their science learning a lot more easier

1. Group members:-
Aditya,Kushal,Harsh,Abhishek,Panth

2. What is ecosystems?
 Ecosystem is made up of two types of components -
biotic and abiotic components.
 Biotic are living the living factors of the enviorment.
 Abiotic factors are the non-living components of the
enviorment.

3. https://www.youtube.com/watch
?v=sKJoXdrOT70

5. Structure of an ecosystem
 Biotic factors are dependent on abiotic factors and
they are capable to adapt with different abiotic factors.
 Abiotic factors like air,water,soil,etc affects the biotic
factors.
 The proportion of abiotic factors in an ecosystem is
always changing due to biotic factors.
 Every biotic factor is included in an ecosystem.
 The role that a biotic factor plays in an ecosystem is
called Niche.

7. About ecosystems
 Most of the ecosystems are complex and have a huge
variety of species.
 In countries like India few species are found
everywhere.
 Each place has different ecosystem.
 Types of ecosystems are formed according to
size,place,climate,types of plants and animals.
 Though many types of ecosystems are found in
biosphere but they all are linked to each other directly
or indirectly.

8. How the word ‘ecosystem’ came in use
 ''How can we describe the inter relationship between
physical and biological factors in one word ?'' This
question was asked to a scientist Ray Claffam and he
answered ‘ecosystem’.
 His colleague A.G. Tansle used this word in 1935.
'Biotic community' is another name for 'ecosystem.'

9. Biomes
 In some regions on earth, a large area has same climate
and abiotic factors. The living organisms in those area
are also similar. So a specific ecosystem developes in a
vast area. Such large ecosystems are called 'Biomes'.
 These biomes contain many small ecosystems.
 There are two types of biomes,land biomes and
aquatic biomes.

10. Quizz
 What forms an Ecosystem ?
 Who decides that which biotic factors will survive ?
 On what factors the types of Ecosystem is formed ?
 What is the Other name of Ecosystem ?
 Name two types of biomes.

11. Thank You