Answer: Option [C]The correct answer is Three. Water can exist in 3 different physical states – solid, liquid, and gaseous. In the solid state, water exists in the form of ice or snow. In the gaseous state, water exists as water vapour or steam.
Answer: Option [A]The correct answer is Diaforms. Diatoms are one of the major primary producers in the ocean, responsible annually for ~20% of photosynthetically fixed CO2 on Earth.
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Answer: Option [B]The correct answer is 71%. Covering 71% of the Earth’s surface, aquatic biomes are the largest of all the biomes on the Earth. An aquatic biome is a group of living organisms that live and interact with one another and its aquatic environment for nutrients and shelter.
Answer: Option [A]The correct answer is North America. The Great Plains, which is located in the central part of North America, contains the largest prairie in the world.
Answer: Option [D]The correct answer is 50dB-40dB. Permissible limits for noise in silence zones are 50dB during day time and around 40dB during night time, these are also ranges from 100 km from the hospital and education institutes.
