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ग्रहों की स्थिति

Q1. दूरी के अनुसार ग्रहों की स्थिति ? बुध (Mercury) शुक्र (Venus) पृथ्वी (Earth) मंगल (Mars) वृहस्पति (Jupiter) शनि (Saturn) यूरेनस (Uranus)...

A polyhouse is a specially constructed structure like a building where specialised polythene sheets are used as a covering material under which crops can be grown in partially or fully controlled climatic conditions.

It is covered with a transparent material to permit the entry of natural light.Polyhouses are also helpful in reducing threats such as extreme heat and pest attacks in crops.

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