Reasons for Green House Effect
a) Out of total air pollutants to be 1 x 10 1 2 tons, man made pollutants are 5 x 10 8 tons. b) 25% of world's green house gases are released by USA which supports 4% of global population. c) Carbon monoxide accounts for 50% air pollution d) Suspended particulate matter (dusts o..
The Earth's Crust
Continents and ocean basins (land beneath the oceans) are part of a rocky 'skin' that surrounds the main body of the earth. This skin is called the earth's crust. The crust of the earth is like the skin around an orange or an apple. The thickness of the crust varies from about 8 kilometer..
Continents and ocean basins (land beneath the oceans) are part of a rocky 'skin' that surrounds the main body of the earth. This skin is called the earth's crust. The crust of the earth is like the skin around an orange or an apple. The thickness of the crust varies from about 8 kilometer..Reasons for Green House Effect
Reasons for Green House Effect - a) Out of total air pollutants to be 1 x 10 1 2 tons, man made pollutants are 5 x 10 8 tons. b) 25% of world's green house gases are released by USA which supports 4% of global population. c) Carbon monoxide accounts for 50% air pollution d) Susp..
Gaseous Exchange in Grasshopper
The respiratory system in insects is called the tracheal system. It involves the diffusion of oxygen directly from the atmosphere into the air-filled tubes. Thus, the diffusion is through air and hence, is more efficient than the diffusion through water (300,000 times more) or tissues (1,000,000 ti..
The respiratory system in insects is called the tracheal system. It involves the diffusion of oxygen directly from the atmosphere into the air-filled tubes. Thus, the diffusion is through air and hence, is more efficient than the diffusion through water (300,000 times more) or tissues (1,000,000 ti..Compound
A compound is a pure substance that is formed by the combination of atoms of two or more elements by either transfer or by sharing of electrons. The atoms of the different elements in a compound are chemically combined in a fixed and constant proportion. If this proportion is different, the same el..
Air is a Mixture of Different Gases
. Oxygen supports burning and breathing, so does air. Carbon dioxide turns limewater Milky white, so does air. Thus, as each constituent of air retains its own property, it exhibits the property of one or all of its constituents. c) There is no sign of any chemical change when air is form..
Applications of Elasticity
The thickness of the metallic rope needed to lift a given load is decided using the knowledge of elastic limit of the material of the rope and the factor of safety. Electric poles are made hollow A hollow shaft is found to be stronger than a solid one because the torque required to twist a hollow c..
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