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Carbon paper leaf prints
Cover the vein side of a leaf with a very thin layer of lard or vaseline. Place the greased leaf vein side up on various layers of newspaper and cover with a sheet of carbon paper. Cover the carbon paper with another sheet of paper and rub across it various times with the side of a smooth pencil, to coat the leaf with material from the carbon paper. To make the final print place the leaf among two sheets of white paper and again rub with the pencil
Natural selection is a process which directs all biological evolution. It is a process that directs genetic changes which when proved to be adapted to the environment are retaine
What are the most significant inorganic molecular substances for living beings? The most significant inorganic substances for living beings are mineral salts, water, carbon dio
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importance of blood tests
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Tricks of learn a classification (molusca,arthopoda,prifera etc.)
What is the function, other than protection, of the ribs? The ribs help to alter the volume of the thorax during breathing movements.
True or false? It would be difficult to assess whether the drug-susceptible or drug-resistant phenotype in a population of Mycobacterium tuberculosis was more fit in an environment
Q. What is biodiversity? The Biological diversity is the variety of species of living beings of an ecosystem. In the ecosystems which are more biodiverse, like tropical forests
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