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प्रश्न
Give reasons.
Soil is turned over during tilling.
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उत्तर
Soil is turned over during tilling to bring the nutrient-rich lower layers of soil to the surface and to loosen the soil so that air and water can easily reach the roots of plants.
संबंधित प्रश्न
________ is a substance obtained by microbial processing that functions as an artificial sweetener.
A clean (smokeless) fuel.
Lactic acid : To impart acidity : : Beta carotene : _____________________
Methane gas is produced by microbial oxidation of industrial waste.
Match the following.
| Column A | Column B |
| 1) Aspartame | a) Anaerobic respiration |
| 2) Fermentation | b) Microbial restrictor |
| 3) Niacin | c) Vanillin |
| 4) Essence | d) Sweetener |
Give scientific reason.
The landfill pit is lined with plastic sheets.
Write a short note.
Bio-fuels
Unscramble the jumbled word underlined in the following statement.
Curbossulite is an air-borne disease caused by a bacterium
Nostoc is used for fixing nitrogen.
Lactobacillus brevis gives us the beverage ______.
