B, the others are not testable under lab conditions.
Answer:
The nucleus is an organelle found in eukaryotic cells.
Explanation:
I believe it’s the study of agriculture (c)
Answer:
1 : to institute (something, such as a law) permanently by enactment or agreement. 2 obsolete : settle sense 7. 3a : to make firm or stable. b : to introduce and cause to grow and multiply establish grass on pasturelands.
