It’s C because they took out the letter A from the new strand of DNA. btw deletion means to take away and substitution means to sub in a letter. hope that helped!
Answer:Between A and B is one of those i think
Explanation:
Explanation:
When we take a breath, we pull air into our lungs that contains mostly nitrogen and oxygen. When we exhale, we breathe out mostly carbon dioxide.
It would be B. the mixture became warm, as a change in temperature is certain evidence that a chemical reaction has taken place.
All living things are composed of cells. Some organisms, such as algae, are composed of a single cell (called unicellular organisms), while others, such as animals, are composed of many (called multicellular organisms). All living things grow and develop. ... Lastly, living organisms respond to their environment.
