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What is the heterotrophic hypothesis on the origin of life?
As per to the heterotrophic hypothesis the first living beings were very simple heterotrophic organisms that is not producers of their own food, which emerged from the gradual association of organic molecules into small organized structures (the coacervates). The first organic molecules within their turn would have appeared from substances of the earth's primitive atmosphere submitted to strong electrical discharges, to solar radiation and to high temperatures.
How does water move inside sponges? What is the function of the pores in these animals? Sponges are filtering beings. They make water enter their bodies by their lateral pores
Why is the occurrence of eyelids in amphibians in comparison to their absence in fishes and adaptation to terrestrial life? Eyelids associated to lacrimal glands protect and ke
Aspect of Tolerance and Dependence: Drug-abusers are said to be psychologically dependent upon certain drugs. Drugs also induce clear physical dependence in the chronic users.
The two gases making highest relative contribution to the greenhouse gases are: 1. CO2 and CH4 2. CH4 and N2O 3. CFC55 and N2O 4. CO2 and N2O CO2 and CH4
CONJUNCTI V A - Ectodermal in origin. Formed by epidermis. It is thin, transparent covers cornea. Made up of stratified epithelium. It has 2 parts - (i) Ocular conjunct
organism that can not exist in the presence of oxygen ?
S e c t i o ned and Formed Meats These are technically speaking restructured products, since they are partially disassembled and then reassembled to form products resembl
Disorder of Parathyroid Function: The disorders of parathyroid function may either lead to increased production or decreased production of parathormone. Hypoparathyroid
In chemistry and particularly in biochemistry the fatty acid is a carboxylic acid with a long aliphatic tail (chain) that is either saturated / unsaturated. Many obviously occurrin
Common Features of Eye and Limb Development A comparison of the embryonic development of the very much different organs, the eyes and the limb, points to various interesting
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