Mahaasaagar aur Jeevan

Class 6 Social Science · Chapter 2: Mahaasaagar aur Mahaadweep · NCERT Exploring Society: India and Beyond section 2.4

Seekho

Dharti par jeevan mahaasaagaron mein shuru hua, aur wo aaj bhi jeevan se bhare hain: chhote plankton se lekar vishaal neeli whale tak, jo ab tak ka sabse bada jaanwar hai. Moonga chattaanein (coral reefs) hazaaron tarah ki machhliyon aur jeevon ke rangeen ghar hain.

Mahaasaagar garmi jama karke Dharti ka mausam naram rakhte hain. Samudra ke chhote paudhe (algae) hamari saans ki kaafi oxygen banaate hain. Mahaasaagar humein machhli aur namak dete hain, aur jahaaz duniya ka zyaadatar vyapaar inke paar le jaate hain.

Log plastic phenkkar, tel bahaakar aur zyaada machhli pakadkar, yaani prajanan se tez pakadkar, mahaasaagaron ko nuksaan pahunchaate hain. Bhaarat mein maansoon ke dauraan kuch hafton ke liye machhli pakadna roka jaata hai taaki machhliyaan prajanan kar sakein.

Neel aur uske dost beach safaai mein shaamil hote hain aur ek subah mein plastic se bees bore bhar dete hain. Chhote kaam, jaise kapde ka thaila le jaana aur paani ke paas kabhi kachra na phenkna, mahaasaagaron ko swasth rakhte hain.

Explore: mahaasaagar ki madad ya nuksaan?

1. Har kaam sort karo.

Yaad rakho

• Mahaasaagar jeevan se bhare hain aur khaana, oxygen, vyapaar ke raaste aur naram mausam dete hain.
• Plastic, tel aur zyaada machhli pakadna mahaasaagar ko nuksaan karte; chhote kaam unhe bachaa sakte hain.

Quick check

Zyaada machhli pakadna haanikaarak kyun hai?

1. Machhliyaan prajanan se tez pakdi jaati hain
2. Samudra bada hota hai
3. Paani saaf hota hai
4. Moonga badhta hai

Socho

Machhuaare maansoon mein machhli pakadne ki rok ka samarthan kyun karenge?

Practice

Teen levels (easy, medium, hard) ke naye sawaalon se practice karo, kuch hands-on, hints aur hal ke saath. Topic poora karne ke liye pichhle 5 mein se 4 sahi karo.