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Meghna Thapar 5 years, 3 months ago
An ecosystem is a community of living organisms in conjunction with the nonliving components of their environment, interacting as a system. These biotic and abiotic components are linked together through nutrient cycles and energy flows. The simplest definition of an ecosystem is that it is a community or group of living organisms that live in and interact with each other in a specific environment. The four ecosystem types are classifications known as artificial, terrestrial, lentic and lotic. Ecosystems are parts of biomes, which are climatic systems of life and organisms. In the biome's ecosystems, there are living and nonliving environmental factors known as biotic and abiotic.
Posted by Arni Bhadoriya 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Magnesium oxide dissolves in water to form magnesium hydroxide solution. Magnesium hydroxide turns red litmus to blue which shows that magnesium oxide is a basic oxide.
Posted by Shreya Kumbhar 5 years, 3 months ago
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Meghna Thapar 5 years, 3 months ago
White phosphorus is highly reactive, and spontaneously ignites at about 30°C in moist air. It is usually stored under water, to prevent exposure to the air. It is also extremely toxic, even in very small quantities. In water, white phosphorus reacts with oxygen within hours or days. In water with low oxygen, white phosphorus may degrade to a highly toxic compound called phosphine, which eventually evaporates to the air and is changed to less harmful chemicals.
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Mohit Mohanty 5 years, 3 months ago
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Deepakshi Dua 5 years, 3 months ago
Yogita Ingle 5 years, 3 months ago
A plastic which once set,does not become soft on heating and cannot be moulded a second time,is called thermosetting plastic. Once set in a given shape and solidified,a thermosetting plastic cannot be re-softened or re-moulded. They are known as thermosets.
Example: Backlite and thermoset
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Yogita Ingle 5 years, 3 months ago
algebraic equation in one variable
variable will have power 1 only
Example 2x - 3 = 5
Rahil Ajameri 5 years, 3 months ago
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Arshdeep Singh 5 years, 3 months ago
Meghna Thapar 5 years, 3 months ago
In 1994, the United Nations General Assembly proclaimed 16 September the International Day for the Preservation of the Ozone Layer, commemorating the date of the signing, in 1987, of the Montreal Protocol on Substances that Deplete the Ozone Layer (resolution 49/114). The theme for this year celebrates over three decades of remarkable international cooperation to protect the ozone layer and the climate under the Montreal Protocol. It reminds us that we must keep up the momentum to ensure healthy people and a healthy planet.
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The world's first oil well was drilled in Pennsylvania, USA, in 1859.
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