২.১ ধ্রুবতারাকে আকাশের কোন দিকে দেখা যায় ? ২.২ এমন একটা বর্জ্য পদার্থের নাম লেখাে যা সহ ২.৩ পশ্চিমবঙ্গের কোথায় রেল ইঞ্জিন তৈরির কা একটি বা দুটি বাক্যে উত্তর দাও : ৩.১ কৃত্রিম উপগ্রহগুলি আমাদের দৈনন্দিন জীবনে
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2.1. The North Star or Pole Star – aka Polaris – is famous for holding nearly still in our sky while the entire northern sky moves around it. That's because it's located nearly at the north celestial pole, the point around which the entire northern sky turns. Polaris marks the way due north.
2.2 These include liquid waste, solid rubbish, organic waste, recyclable rubbish and hazardous waste.
2.3 Chittaranjan Locomotive Works (CLW) is an electric locomotive manufacturer based in India. The works are located at Chittaranjan in the Asansol Sadar subdivision of West Bengal, with an ancillary unit in Dankuni.
3.1 they help in television and radio transmission.
they help in radio communication.
they help us study and forcast the weather by sending cloud pictures to the Earth from the space.
they help in locating minerals and studying agricultural yield on the Earth by photographs land from above.
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