I NEEED HEEELP PLEASE

If many different species live in an ecosystem, this the ecosystem to fill its a. populations b. niches c. producers d. communities

Explain light independent reactions

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