Question: Which of the following objects might orbit a planet?
A. a moon B. an asteroid C. a galaxy D. a star
Answer:
"Moon" that orbit a planet.
Explanation:
Moon has made its orbit around the Earth that we live, But the asteroid and the stars given in the option revolve around the sun. And the place where we live is the galaxy. Moon has made its orbit around the earth and also is natural satellite. Among all it is the fifth largest in the count of the largest satellite present in our solar system. It is also referred as the largest planetary satellite which is when compared with the size of the planet.
S phase is the DNA synthesis phase. During this portion of the cell cycle, the cell replicates its entire complement of DNA. It also forms the centrosome, which is the microtubule-organizing center that will eventually help the cell pull apart the DNA that will be divided between daughter cells.
B . Excessive commercial fishing
Reason: the other options are good things this is the only bad thing
T cells signal B cells to adjust the pH of the blood. would be correct i believe.