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In India a tropical wet and dry climate is more common.

Historian and Bishop William Stubbs has been called the Father of Modern History.

Let length and area of rubber and steel rod = l and a respectively
Let Yr = Young’s modulus of elasticity for rubber
Ys = Young’s modulus of elasticity for steel when Stretching force F is applied, Let
{tex}\Delta l r{/tex} Extension in rubber
{tex}\Delta{/tex} ls = Extension in steel
Now, {tex}\Delta l r{/tex} will be greater that ∆ls.
Now {tex}Y = \frac { F l } { a \Delta l } = \frac { \text { Normal stress } } { \text { Longitudinal strain } }{/tex}
So, {tex}\mathrm { Yr } = \frac { F l } { a \Delta l r } ; \mathrm { Ys } = \frac { F l } { a \Delta {l} s }{/tex}
Since {tex}\Delta l r > \Delta l s{/tex}
So, Y_r < Y_s
Hence more the modulus of elasticity more elastic is the material, so, steel is more elastic than rubber.

Let the mole fraction  of ethanol (C₂H₅OH) be represented by x,
Then the following expression represents its mole fraction in ethanol solution- 
^xC₂h₅OH = {tex}\frac{\mathrm{n}\left(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}\right)}{\mathrm{n}\left(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}\right)+\mathrm{n}\left(\mathrm{H}_{2} \mathrm{O}\right)}{/tex}
(where x C₂H₅OH  represents mole fraction of ethanol)
= 0.040 (given)....(i);
where "n'' (represents number of moles of the two referred liquids in ethanol solution).
The following steps are used for calculations,
The aim is to find number of moles of ethanol in 1 L of the solution.
Step 1 /-  No. of moles in 1 L of water
= {tex}\frac{1000 \mathrm \ {g}}{18 \mathrm \ {g} \mathrm \ {mol}^{-1}}{/tex}
= 55.55 moles
Step 2 /-. Substituting n (H₂O)
= 55.55 in equation (i), we get
x ( C₂H₅OH)
= {tex}\frac{\mathrm{n}\left(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}\right)}{\mathrm{n}\left(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}\right)+55.55}{/tex}
= 0.040......(given )
solving for n (C₂H₅OH) we get,
0.96 n ( C₂ H₅ OH ) 
= 55.55 {tex}\times{/tex} 0.040
{tex}\therefore{/tex} n (C₂H₅OH)
= 2.31 mols
So  2.31 moles of C₂ H₅ OH are present per litre of given ethanol solution. 
Hence,
the molarity of the solution of ethanol is 2.31 M.

A diploid cell is a cell that contains two sets of chromosomes. One set of chromosomes is donated from each parent. The diploid number is commonly abbreviated as 2n. For humans this equation would be 2n=46. Humans have 2 sets of 23 chromosomes leading to a total of 46 chromosomes.
Haploid cell is a cell that has only a single set of chromosomes. The cell contains only one member of each homologous pair of chromosomes (haploid number = n). For example - A  human germ cell (a sperm or an egg cell) is haploid, which means it contains only one of each of the 23 chromosomes of the human genome, or it only has half the diploid (2n) number of a human somatic cell (which is 46.

Introns are the reminiscent of antiquity. This is because introns were present in the past organisms but during the course of evolution prokaryotes excluded them from their genome while eukaryotes retain them for functional advantages. Also they have been conserved because of their property of replication and dispersion.
 

Lichen do not find place in five kingdoms of classification b'coz they are considered as a connecting link b/w living and non living things..
They are neither living nor non living...
So they r not in any kingdom.