I think the Answer is truly B.
Answer:
The cuts are that are made by endonucleases have two outcome. Either they will be of sticky ends or blunt ends. Both of these ends come as a result of type of endonuclease that we are going to use.
There are also some extra sequence fragments that came additionally after cutting procedure. For example, the endonuclease EcoR1 cut the DNA fragments from 5' end that are sticky in nature and extra fragments of AATT hang up after cutting.
Answer:
Air contains about 21 percent oxygen, and most fires require at least 16 percent oxygen content to burn. Oxygen supports the chemical processes that occur during fire. When fuel burns, it reacts with oxygen from the surrounding air, releasing heat and generating combustion products (gases, smoke, embers, etc.).
Explanation:
The answer is Oceans because the biosphere extends from the deepest root systems of trees,to the dark environment of ocean trenches,to lush rain forests and high mountaintops.