Cell nucleus: A cell's information center, the cell nucleus is the most conspicuous organelle found in a eukaryotic cell. It houses the cell's chromosomes, and is the place where almost all DNA replication and RNA synthesis (transcription) occur. I hoped I helped(:
Answer:
Aquatic ecosystems that are composed of salt water are coral reefs, open ocean, and intertidal zones. Neritic zones also have salt water, but the salinity levels are very light. :)
1) Sunlight, Water, Carbon dioxide
2) Starch, Oxygen
3) 'cause one's need can be fulfill only by other one.
The population will increase causing an overpopulation of rats.