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.
Using the DNA to find out where the ivory comes from, Dr Wasser is able to work with law enforcement to know where to focus their protection measures. Having law enforcement in concentrated area that have been known to be poached can hopefully help prevent illegal poaching. Hope this helped :)
According to modern systems of classification, birds are descendants of T<span>heropoda dinosaurs. These dinosaurs are called Paraves. From this clade, a node is made during the evolution. The new clade is called Aves. This is where birds are classified.</span>
Hello!
If I remember correctly the answer would be B! I hope that this helps.
