Answer:
Carbon Dioxide (CO2) and other greenhouse gases
Image result for describe the 4 chambers of the heart
The right ventricle pumps the oxygen-poor blood to the lungs. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle. The left ventricle pumps the oxygen-rich blood to the body
A change in DNA is called a mutation.
A single change or alteration in the nucleotide base of the genetic material of the cell is called a point mutation. It can be a deletion, addition or inversion of a single nucleotide base.
In the following, the mutations that occurred are 1. C and 2. B.
<h3>How the mutation can be explained?</h3>
- <u>Silent mutation</u> occurs in a single base of the triplet codons of the bases but the alterations do not cause an observable effect and they remain as a neutral alteration. They do not affect the function of the protein. Thus, the glycine to glycine is a silent mutation.
- <u>Non-sense mutations</u> are caused when the single change in the nucleotide base results in the formation of the stop codon. Thus, lysine to stop codon is a nonsense mutation.
Therefore, silent and nonsense mutations are the correct options.
Learn more about point mutation here:
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Answer:
Impact of Climate Change (Global Warming) - glacier melting & global see level rise : influence on human activity
Explanation:
- Extreme Flooding - High sea levels imply more inflow into other water bodies like rivers, lakes etc
- Biodiversity Loss - Many organisms can continue their existence only on extremely cold glaciers - eg (blue bear)
- Further accelerated global warming - Glaciers have important role in absorbing earth heat, maintaining its coolness. Their melting leads to further global warming.
- Scarcity of freshwater - Glaciers & snow (salty) water cant be consumed. Increase in this water has reduced proportionality of freshwater that can be consumed