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ORDER BY `video_id` desc Environmental Science 9th Standard
Science The ice sheets from the north and south poles and the icecaps on the mountains, get converted into water vapour through the process of ______________. evaporation condensation sublimation infiltration In some xerophytes, leaves are modified into spines as an adaptation ________________. to reduce transpiration rate to store water to reduce consumption of water all of the above Which of the following is one of the strategies to conserve water? Water recycling Increasing the number of bore wells Using large overhead water tanks Watering the plants using hose Specific constituents such as nitrogen, phosphorus, suspended solids and heavy metals found in the wastewater are removed during ___________ treatment of water recycling process. primary tertiary secondary none of the above Deforestation generally decrease ______________. Rainfall Global warming Soil erosion Drought Some of the precipitated water moves deep into the soil and increases ground water level is called as _______________. Cindrella of the plant kingdom is called as _________________. In opuntia leaves are modified into _______________. Plants that grow in dry habitat are called as _______________. ______________ is a primary nutrient for the survival of all living organisms. Nitrogen is a greenhouse gas Bats are the only mammals that can fly. Aestivation is an adaptation to overcome cold condition. Hydrophytes are common land plants. Earthworm become inactivate, during hot and dry climate is called as Aestivation. Nitrogen fixation Pseudomonas species Nitrification heavy. solids, oil grease Denitrification heavy metals scholorination Primary treatment Azotobacter Tertiary treatment Nitrosomonas What are the two factors of biosphere? What is adaptation? List some of the ways in which you could save water in your home and school? What is grey water? What is IUCN? What is the vision of IUCN? Describe the processes involved in the water cycle. What is water recycling? Explain the conventional wastewater recycling treatment methods? List out the advantages of farm ponds.9th Standard Science - Environmental Science Model Question Paper
Oct-31 , 2019
Environmental Science Model Question Paper
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