Most scientists believe that for half of Earth's 4.6-billion-year history, the atmosphere<span>contained almost no </span>oxygen. Cyanobacteria or blue-green algae became the first microbes to produce oxygen<span> by photosynthesis, perhaps as long ago as 3.5 billion years ago and certainly by 2.7 billion years ago.
this answer came from this website </span>The Rise of Oxygen - Astrobiology Magazine<span>www.astrobio.net/news-exclusive/the-rise-of-oxygen/
it should help</span>
Answer: To produce human insulin for diabetics, making better crops that have insecticides and to help the environment by cleaning up oil spills
Explanation:
I just had this question on a quiz and the other options aren’t ethical options.
Dyad is the word to match your description
Answer:
Lab results: The oil will stain red with Sudan III dye since it is a lipid and contains triglycerides. However, since the oil is less dense than water and insoluble in water, the oil will form a layer or globules above the water and appear as a red layer above the water in the test tube
