A 7.5 mile wide asteroid slammed into the Earth and killed off more than three-quarters of the all species on the planet. There were many changes caused due to the impact. Ocean acidification likely dissolved the shells of their microscopic young ones. Fossil records also shows that the impact wiped plankton species which was their main food source.It starved the ammonites.
The cell nucleus acts like the brain of the cell. It helps control eating, movement, and reproduction. It contains the genetic material and controls the function of the cell.
