I’m pretty sure formal is not
Low dissolved oxygen concentrations that occur in many bodies of water when nutrients stimulate the growth of algae that subsequently die and are decomposed by oxygen-using bacteria.
I think the answer is letter C I am so sorry if I am incorrect
Explanation:
The United States is known for being very diverse due to the fact that people have emigrated to the US. This is because people want to live the "American Dream" and have a successful career and family. If someone is facing hardships in their home country, they will try to move to the US to start a better life.
Answer:
C. the motion of Earth around the center of the Milky Way.
Explanation:
- As per the information given by the CBM which explains the background radiation that fills up the space and early stags of the development.
- The universe of ration explains the motion of the earth around the centers of the milky way and was accidentally discovered by American radio astronomers n 1964. Its a landmark the shows the origin of the universe when it was young.