In the warm southwest United States rabbits are brown and have long ears. In Polar Regions rabbits are white and have shorter ears. But rabbits from Polar Regions have white fur. Because to protect from predators and mould to survive in cold environment.
<u>Explanation:
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Shortened ears and a thick, white coat are some of the physical features created by snow bunnies to survive in the hard, frozen tundra. The polar rabbits (hares) live in the cruel climate of the North American tundra.
These hares do not lie dormant, but survive a dangerous cold, adapting to various behavioural and physiological changes. They have thick coats and a low surface to volume ratio that accumulates body heat, which is most noticeable in their shortened ears.
Hares sometimes dig a shelter in the snow and crawl together to share the warmth. In winter, they have a beautiful white jacket that provides great camouflage on ice and snow.
Water molecules forming hydrogen bonds with one another. The partial negative charge on the O of one molecule can form a hydrogen bond with the partial positive charge on the hydrogens of other molecules. Water molecules are also attracted to other polar molecules and to ions.
1. Proteins are made from subunits called amino acids. There are 20 different amino acids which are responsible for the variation of proteins. Those amino acids are linked together by peptide bonds and form polypeptide chains. According to the polypeptide structure, there are 4 levels in protein structure as primary structure, secondary structure, tertiary structure and quaternary structure.
2. Starch is a type of carbohydrate. Hence, the subunits of starch are sugar molecules which are called as glucose. The elements of glucose are C,H,O. By linking glucose units with 1-4 alpha glycosidic bonds, the polysaccharide chain is formed. Hence, starch is also a polysaccharide<span>.
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3. DNA is made from subunits called nucleotides. Nucleotides consist of deoxyribose, phosphate group and nitrogenous base.
There are two types of nitrogenous base as purines and pyrimidines. Adenine (A) and guanine (G) are purines and
thymine (T) and cytosine (C) can be seen as pyrimidines. Those nucleotides are linked together by sugar phosphate bonds which are formed between 5' phosphate group and 3' -OH group<span>.</span><span>
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The temperature of tropical areas relative to places more distant to the equator. Another reason why is higher nutrient cycling, which is also an effect of higher temperature.
