Tag: commercial applications
Questions Related to commercial applications
Choose the incorrect one.
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In logistic growth equation when N $<$ K then r $> 0$
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In logistic growth equation when N$=$K then r$=$constant
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In logistic growth equation N $>$ K then r $< 0$
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In logistic growth equation N $>$ K then r $> 0$
The concept that 'population tends to increase geometrically while food supply increases arithmetically was put forward by
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Adam Smith
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Charles Darwin
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Thomas Malthus
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Stuart Mill
The concept that 'population tends to increase geometrically while food supply increases arithmetically were put forward by Thomas Malthus. In his theory of natural selection, Charles Darwin was greatly influenced by the English clergyman Thomas Malthus. Malthus published a book in 17981798 stating that populations with unlimited natural resources grow very rapidly, after which population growth decreases as resources become depleted. This accelerating pattern of increasing population size is called exponential growth.
A rancher moved his herd of cattle to a different pasture. Identify the correct statement which indicates that the carrying capacity of that pasture was exceeded, as per the given example.
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The herd increased in size.
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The pasture became overgrazed and barren.
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The pasture had more grasses.
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The cows gained weight.
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The cows had more calves.
Carrying capacity is the maximum size of the population of a species that a certain environment can support for an extended period of time. Once population overshoots the carrying capacity, it starts decreasing as at this point, the different environmental resistances start operating and population dies because of the struggle for existence. Among the given options, option B shows that carrying capacity of pasture was exceeded turning it into the barren land. The increase in grasses or weight gain of cow suggests growth of grassland.
Sigmoid /logistic growth curve is represented by
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dN/dt=rN
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dN/dt=rN(1-N/K)
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$N _t=N _0+B+I-D-E$
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dN/dt=1-N/K
Why do we celebrate water day every year?
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We celebrate water day every year to attract the attention of everybody towards the importance of conserving water.
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It is a tradition.
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It is for commercial purposes.
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None of the above
Almost all the water on the earth is contained in the ____________.
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seas and oceans
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rivers, lakes
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ice caps
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All of the above
Almost all the water on the earth is contained in the seas and oceans, rivers, lakes, ice caps, as groundwater and in the atmosphere.
Why earth appears blue from the space?
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About 71% of the earths surface is covered with water which gives blue colour to earth.
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Earth is covered with blue air.
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Earth is covered with blue coloured mountains and rocks.
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All of the above.
- The earth is predominantly (71 % of the earth's surface) covered with water. Water absorbs the white light in the radiation (sunlight). The sunlight through appears white it is actually a combination of lights of several different colors (Violet, indigo, blue, green, yellow, orange and red).
- When sunlight reaches the water; the water absorbs, lights of all colors in the white light and reflects only blue light. Thus, the earth from space appears blue. If the water absorbs all colors and reflects only yellow, then it would appear yellow.
'Water' has a high
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Dipolic movement
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Tripolic Movement
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No dipolic movement
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No tripolic movement
In which of the following date "World Water Day" is observed?
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March 20th
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March 21st
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March 22nd
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March 23rd
Which of the following can be used to conserve water in homes?
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Composting toilets
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Rainwater harvesting
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Automatic faucet
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All of the above
Water-saving technology for the home includes:
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Low-flush toilets and composting toilets. These have a dramatic impact in the developed world, as conventional western toilets use large volumes of water.
- Rainwater harvesting high-efficiency clothes washers weather-based irrigation controllers garden hose nozzles that shut off water when it is not being used, instead of letting a hose run. Low flow taps in wash basins.
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Automatic faucet is a water conservation faucet that eliminates water waste at the faucet. It automates the use of faucets without the use of hands.