Answer:
In the past few decades, Carbon dioxide levels has been rising.
Explanation:
- Rising levels of Carbon dioxide has become an immediate concern for the Environmentalists.
- This is because carbon dioxide is a green house gas and risen levels of green house gases can lead to unusual warming up of the Earth's Atmosphere.
- This phenomenon is termed as Global warming.
- Global warming can lead to seasonal variation and melting of the ice caps to flood several continents.
- In Last few decades The levels of Carbon dioxide is rising at an alarming rate.
- This rise occurs due to the to burning of fossil fuels, combustion of fuels in automobiles, Deforestation etc
- An immediate step is needed to check this addition of carbon dioxide.
The building block of nucleic acids are nucleotides. These consist of sugar, a phosphate, and a nitrogenous base.
Laboratory helps you identify things rather than the others using controlled variables
Answer:Genetic drift
Explanation:
This is the change in genetic composition due to the random sampling of the genes in the population