TUKARAM HARI WAJEKAR HIGH SCHOOL PHUNDE TAL URAN
- Slides: 12
• TUKARAM HARI WAJEKAR HIGH SCHOOL PHUNDE, TAL URAN DIST RAIGAD STANDARD : - 7 TH SUBJECT : - GENERAL SCIENCE CHAPTER : - NATURAL RESOURCES TECHER’S NAME : SAU. PATIL V. D.
1. Natural Resources Points to Study • Natural Resources • Renewable - plant, animal • Non renewable a) Minerals b) Waterc) Air d) soil Biotechnology Std-7 th Sub- science 1. Natural Resources
• Natural Resources 1) We get different kinds of material from nature are called natural resources. E. g. - Soil, Rock, Air, Water, Plants etc. Std 7 th Sub- science 1. Natural Resources
Non renewable resource • The resources that we can not never produce by any method are called non renewable resource • Example - Air, Water, soil, minerals
Air-a natural resource *Living things required air for breathing. *unlimited growth of factories, vehicle is responsible for air pollution Std-7 th Sub- science 1. Natural Resources
D) Water-a natural resource §Water is fall on earth by water cycle. it is also used for agriculture generating electricity. §There are only limited reserves of water getting polluted. §Std-7 th Sub- science 1. Natural Resources
water Std-7 th Sub- science . Natural Resources
a) Soil* Soil is important non renewable resources. ü Fertile soil used for agriculture. useful bacteria necessary for growing crops Std-7 th Sub- science 1. Natural Resources
c) Minerals Ø Minerals are the non renewable resources. Ø Minerals are the material gets from mine. Ø Metals can be obtained from ores dug out of quarries and mine ØPetrol, Diesel, Kerosene and natural gas are fuels obtained from mineral oil. 20 August observes as Akshayya Urja Din. Sub- science Std-7 th 1 Natural Resources
Renewable resource • Renewable resource – Those resource which can be produced again and again are called renewable resources. • Example – plant , animals.
Biotechnology • Biotechnology is modern technique in which transfer specific gens from one plant into another and to develop new varieties with certain desired characteristics. • In this developed plant in test tube.
Evaluation • • What is meant by natural resources ? Which are two types of natural resource ? What are the uses of soil ? What is biotechnology ?
