The nucleus is the membrane-bound organelle usually present in all eukaryotic cells.
It is termed as the control center of the cell as it contains DNA (deoxyribonucleic acid) that is, the genetic content of the cell.
The DNA controls and directs all the activities of the cell. It gives instructions for the synthesis of mRNA which in turn codes for the synthesis of protein.
Moraines are made of till. They form when a glacier stays in one place for a long time and deposits a pile of till, then it retreats and leaves a moraine.
