The <span>attraction between a slightly positive hydrogen atom and a slightly negative atom often oxygen or nitrogen</span> is called covalent bonding. This type of bond happens when electrons are being shared by atoms in order to be more stable. Hope this answers the question.
The answer is Ivory.
Made from the teeth and tusks of large mammals, most frequently elephants,<u> ivory </u>is extremely rare to come by today
What is ivory?
Ivory is a tough, white substance made up of the tusks and teeth of animals, generally those of elephants. Dentine, one among the physical components of teeth and tusks, makes up the bulk of ivory.
No of the origin species, the teeth and tusks of mammals have the identical chemical makeup.
The term "ivory" are often used to refer to any mammalian teeth or tusks of commercial importance that are large enough to be carved or scrimshawed because the trade in some teeth and tusks other than elephant's is well established and ubiquitous.
In addition to natural ivory, synthetic ivory also can be made, therefore it's not necessary to remove the substance from animals (unlike natural ivory). Tagua nuts are often carved to resemble ivory as well.
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Biotic and abiotic because it’s like living and non living
Transparent is D
Translucent is B
Opaque is A
Absorption is C
Hydrophobic effect is the tendency of non polar molecules (hydrophobic) in a solvent that is polar to interact with each other resulting to a hydrophobic interaction. These non polar molecules are called hydrophobes and are made of long chains of carbon that are water hating (do not interact with water). In this case,the hydrophobic interactions are most likely to occur on the core of a water soluble protein.
