What of the following statements is true about natural systems?

How does a sponge feed itself and expel waste? What does the abbreviation ndtc means? Why did the Greeks name Neptune The Greek God of the Sea? Which companies are involved in recycling? What is more common chickens or rats? Do you have to dilute rubbing alcohol to use it a a disinfectant? How would a naturalist view God? What best describes a characteristic of a jet stream? Name the organelle that purpose is protein synthesis? What country does palm oil come from? What type of bond does rhodium form? How do you check the welded joints for uniformity? Why doesChimney smoke appears blue? What is a split receptacle? What is a water molecules from high to low concentration? What physical changes does the old woman undergo at the end of the story? In which genre does the hero typically experience isolation from society at the end? What type of fossils could possibly be found in the Manlius layer? Examples of platyhelminthes? Are electrons lost or gained during the formation of a negatively charged ion?

What of the following statements is true about natural systems?