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How does the study of fossils strengthen the theory of evolution?
The study of fossils reveals ancient and extinct species having many same structures to others of the present and of the past. Fossils still permit radioactive dating to estimate the periods during which species lived and to establish a chronological relationship among them. Those evidences strengthen the hypothesis of relationship and common origin between species and that their features have modified gradually unless the formation of the current species.
What is the meaning of Narcolepsy This is an inappropriate attack of sleep, the affected person has an overwhelming impulse to fall asleep or simply collapses into sleep at inc
Q. How is digestion performed in protozoans? Digestion in protozoans is intracellular digestion organic material degraded inside the cell and is internalized. Protozoans get
What is Vacuoles A very conspicuous feature in most plant cells is the presence of one or more large vesicles called vacuoles which are separated from the rest of the cytoplasm
After the food intake is over, the food gets digested, assimilated and finally egested through the kidneys and anus. The urinary system: • Filters waste materials from the blood
Explain the Canal Obstruction File work shorter than the normal apical and feel a great resistance to reach true length. a. A retained instrument o Canal calcification b.
If a lipid bilayer does not form in a test tube of phospholipids in a liquid solvent and instead the heads join together in a circular pattern, the most likely explanation is: a
Management In case of small defects surgical treatment is not indicated because spontaneous closure may occur before one to two years of age. Patient is treated for conges
How were the classification systems of Aristotle and Linnaeus similar? Both systems divided all living things into two major groups, animals and plants, but Aristotle's system
Algae have cell wall made up of: 1. Cellulose, galactans and mannans 2. Hemicellulose, pectins and proteins 3. Pectins, cellulose and proteins 4. Cellulose, hemicellulo
Pathphysiology Streptococcal upper respiratory infection leads to production of antibodies. An abnormal immunological response to the upper respiratory infection with Beta- h
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