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Acid solution weathering
Weathering is accelerated by the presence of the hydrogen ions in water. Rain water dissolves CO2 from air to form carbonic acid, H2CO3. When this acid comes in contact with rocks that contain lime, soda and potash, the minerals containing calcium, magnesium and potassium in these rocks chemically change into carbonates and dissolve in rain water. For example calcite in limestone reacts as given below:
Explain the Adrenal Medulla The adrenal medulla secretes epinephrine or adrenaline and norepinephrine or noradrenaline. The secretory cells of the medulla are modified postgang
INTRODUCTION : In the first unit of this block you read about hazards due to electricity and gases in the science laboratories. 'The second unit deals with yet another type of com
Why marbles rarely contain fossils
Nutrition is a relatively new science that evolved from disciplines such as Chemistry and Physiology. Thus, a student who intends to know and practice nutrition and dietetic
Normally,on flat surfaces,heavier objects don''t travel as far as lighter objects when pushed with the same force.how would I explain why its different?
Where to find fossils In some localities fossils may be found in stone quarries or where there are rock out- crops. Try to search someone in the community who knows about fossi
Define Hypothalamic Control of Anterior Pituitary Gland The hypothalamus controls many of the automatic functions of the body. It secretes a series of different neurosecretory
informations about reproduction
Fire extinguishers You would recall the classification of fires dealt. Table summaries the type of extinguisher used for different classes of fire. Table: Summary of fire e
who is the first scientist
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