When does secondary succession occur in nature?

The mitochondrion functions lipid storage protein synthesis photosynthesis dna replication atp synthesis

Which of these best describes what occurs during cytokinesis? a) the chromosomes are separated b) the cell begins to divide by replicating the chromosomes c) the cytoplasm is divided between the two new daughter cells d) the nucleus opens to allow the chromosomes to enter the cytoplasm

During convection, less dense fluid rises and denser fluid sinks.