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What is the earth made of, What is the earth made of? The overall compo...

What is the earth made of? The overall composition of the Earth, in terms of elemental composition is as follows:   Iron 34.6% Oxygen 29.5% Magnesium 12.7% Silic

Determine the term - soil moisture, Determine the term - soil moisture ...

Determine the term - soil moisture The higher the soil moisture, the more rapid is the rate of reaction. The quantity of liming material to be applied to raise the soil pH to a

What is the significance of soil colour, What is the significance of soil c...

What is the significance of soil colour Soil colour is significant in soil classification, i.e. the characterisation of soil,  interpreting soil properties and understanding so

Interstellar and intergalactic space, Interstellar and Intergalactic Space:...

Interstellar and Intergalactic Space: The space between the stars and the galaxies looks empty, doesn't it? But this 1s not true. In the great dark between stars in the galaxie

Depletion of ozone layer, Depletion of Ozone Layer: Since  the last dec...

Depletion of Ozone Layer: Since  the last decade or so, there is concern about the possible reduction in the ozone layer surrounding  the earth. Now the question arises, what h

Food allergies, Food allergies: Food allergies are different from food ...

Food allergies: Food allergies are different from food fads. Certain fds  seem to have strange reactions on some people. Probably, you have come across a person who got skin ra

Mineral has the name "bloodstone", This mineral has the name "bloodstone" b...

This mineral has the name "bloodstone" because it provides a deep red color on a streak test. What is its chemical formula? Fe 2 O 3

Explain cells as units of life , 1.  Define the cell theory.  2.  Contra...

1.  Define the cell theory.  2.  Contrast the light microscope with the transmission electron microscope. 3.  Describe the structure and function of the plasma membrane, chro

Cement and concrete, Cement and concrete Secure a small bag of Portland...

Cement and concrete Secure a small bag of Portland cement. Have the pupils mix it with water and put it in tin can covers, paper cups, or small pasteboard boxes unless it harde

Explain the local hormones, Explain the Local Hormones Local hormones a...

Explain the Local Hormones Local hormones affect cells in the vicinity of the organ secreting the hormone, what we call as paracrine influence. Examples of local hormones are g

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