Answer:
B
Explanation:
The Ames test is a bacteriological technique commonly used to determine if a particular chemical or substance can cause mutations. To achieve this, researchers use bacteria (commonly <em>Salmonella typhimurium</em>) as this bacteria strain is unable to grow in a medium that does not contain histidine (a very important amino acid in the biosynthesis of proteins). If the studied substance is able to cause mutations, bacteria will mutate, and they will be able to grow on that particular media even if they don’t have histidine for their metabolism. Therefore, if there are colonies growing, the chemical being tested is mutagenic.
I hope this clarify your inquiry.
What system are we talking about? Context is needed... water cycle, cells, etc?
Answer:
https://youtu.be/dQw4w9WgXcQ
Explanation:
copy it open a new tab paste it search it and then theres a vid of me explaing it and the answer if you dont want to watch the xplanation the answers on 3.47
If I am correct, it took less than 50 years for the human population to sky rocket
:)