Each organism has a job in a community
Answer:
They provide energy, protection and insulation for the organs in the body. They're also very important in the cell membranes.
Explanation:
I would say D! Purely because it is looking at the effects of humans (therefore related to topics more geographical).
Hope that helps. :)
Answer:
The atomic number of phosphorus is 15. It has zero charge because it has 15 electrons.