Answer:
Green house gases are the type of gases present in the air which have the ability to trap heat of the earth's surface. Gases like carbon dioxide and methane are found naturally and are known to play an important role in earth's climate. If they are not found the earth' s climate would be too cold creating problem for survival of life on the earth.
These green house gases absorb the emit the radiation in the thermal infrared range. These gases act like a blanket and save earth surface from infrared radiation by absorbing them and prevent them from escaping out of the earth surface.
But now a days due to increased in the concentration of green house gases like carbon dioxide and methane due to pollution and deforestation causing a great problem called as green house effect which lead to global warming and it a great concern for all the people now a days.
The challenges that scientists who want to study particular genes face are as follows:
1. There are many genes on a typical chromosome - A chromosome<span> typically contains hundreds to thousands of </span><span>genes.
2. </span>A small fraction of each chromosome encodes genes - <span> Genes only make up a small percentage of the genome; the rest is composed of non-coding sequences.
3. </span>It is difficult to distinguish between genes and non-coding genetic information - discriminating between<span> coding and </span>noncoding<span> regions in a given nonannotated genomic sequence is quite difficult.</span>
Answer:
ATP molecules
Explanation:
Density centrifugation is a method that separates components of a sample on the basis of their density or density gradient.
During centrifugation the sample will be layered according to their density and that is the principle of density centrifugation.
When centrifuging a sample containing homogenized cells. ATP molecules will be found at the top of the centrifugation gradient due to having a lighter density compared to the rest of the molecules.
Answer:
Elm: 50 %; 1 %
Hazel: 69 %; 4 %
Explanation:
Assume the table looked like this.
![\begin{array}{crrr}\textbf{Month} & \textbf{Ash} & \textbf{Elm} &\textbf{Hazel}\\\text{Nov} &\text{4271 g}& \text{3481 g} & \text{1723 g}\\ & 100\, \% & 100\, \%&100\, \%\\\text{May} & \text{2431 g} & \text{1739 g} & \text{501 g}\\& 100\, \% & x \, \% &z \, \%\\ \text{Aug} & \text{1376 g} &\text{35 g} & \text{62 g}\\& 100\, \% & y \, \% & w \, \%\\\end{array}](https://tex.z-dn.net/?f=%5Cbegin%7Barray%7D%7Bcrrr%7D%5Ctextbf%7BMonth%7D%20%26%20%5Ctextbf%7BAsh%7D%20%26%20%5Ctextbf%7BElm%7D%20%20%26%5Ctextbf%7BHazel%7D%5C%5C%5Ctext%7BNov%7D%20%26%5Ctext%7B4271%20g%7D%26%20%5Ctext%7B3481%20g%7D%20%26%20%5Ctext%7B1723%20g%7D%5C%5C%20%26%20100%5C%2C%20%5C%25%20%26%20100%5C%2C%20%5C%25%26100%5C%2C%20%5C%25%5C%5C%5Ctext%7BMay%7D%20%26%20%5Ctext%7B2431%20g%7D%20%26%20%5Ctext%7B1739%20g%7D%20%26%20%5Ctext%7B501%20g%7D%5C%5C%26%20100%5C%2C%20%5C%25%20%26%20x%20%5C%2C%20%5C%25%20%26z%20%5C%2C%20%5C%25%5C%5C%20%5Ctext%7BAug%7D%20%26%20%5Ctext%7B1376%20g%7D%20%26%5Ctext%7B35%20g%7D%20%26%20%5Ctext%7B62%20g%7D%5C%5C%26%20100%5C%2C%20%5C%25%20%26%20y%20%5C%2C%20%5C%25%20%26%20w%20%5C%2C%20%5C%25%5C%5C%5Cend%7Barray%7D)
To get the percentages for each species for May and August, you divide that month's mass by the November mass and multiply by 100.
![x = \dfrac{\text{1739 g}}{\text{3481 g}} \times 100 \, \% =50 \,\%\\\\y = \dfrac{\text{35 g}}{\text{3481 g}} \times 100 \, \% = 1 \,\%\\\\z = \dfrac{\text{501 g}}{\text{1723 g}} \times 100 \, \% = 69 \,\%\\\\w = \dfrac{\text{62 g}}{\text{1723 g}} \times 100 \, \% = 4 \,\%\\\\](https://tex.z-dn.net/?f=x%20%3D%20%5Cdfrac%7B%5Ctext%7B1739%20g%7D%7D%7B%5Ctext%7B3481%20g%7D%7D%20%5Ctimes%20100%20%5C%2C%20%5C%25%20%3D50%20%5C%2C%5C%25%5C%5C%5C%5Cy%20%3D%20%5Cdfrac%7B%5Ctext%7B35%20g%7D%7D%7B%5Ctext%7B3481%20g%7D%7D%20%5Ctimes%20100%20%5C%2C%20%5C%25%20%3D%201%20%5C%2C%5C%25%5C%5C%5C%5Cz%20%3D%20%5Cdfrac%7B%5Ctext%7B501%20g%7D%7D%7B%5Ctext%7B1723%20g%7D%7D%20%5Ctimes%20100%20%5C%2C%20%5C%25%20%3D%2069%20%5C%2C%5C%25%5C%5C%5C%5Cw%20%3D%20%5Cdfrac%7B%5Ctext%7B62%20g%7D%7D%7B%5Ctext%7B1723%20g%7D%7D%20%5Ctimes%20100%20%5C%2C%20%5C%25%20%3D%204%20%5C%2C%5C%25%5C%5C%5C%5C)
The figure below shows the graphs for ash and elm.