Which figure is closest to the age of the solar system?
4.5 billion years
What force pulled the solar system together out of a cloud of gas and dust?
Gravity
Which term best describes how the solar system is formed?
Gradually
Answer:
I am pretty sure that I know what Anna is working on, given that she wants to find the patterns of demographic variation, is population structure. This structure deals with variations in age, gender, and other qualities of a population, and I believe that is what she wants to find out. So the answer to your question would be that population structures are the patterns of demographic variation.
Answer: ( Outwash )
hope this helps!