Constiutuent of air
Specify the constitution of the air before the life of originon the earth?
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The constituent of earth’s atmosphere was basically include:
a) Methane, b) Ammonia c) Hydrogen, and d) Water vapor.
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Write down the main gas exchange organs of plants? How is the procedure accomplished?
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In the arthropods why is not gas exchange completed by cutaneous diffusion?
Name the chloroplast structure in which chlorophyll molecules are found?
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Name the hormones secreted by the thyroid gland? Also describe their functions?
Name the type of muscle tissue which relaxes and contracts the heart chambers? Answer: The myocardium of heart is made up of cardiac striated muscle tissue.
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