This would be a D) "physical model."
It's not natural, because it's not out in nature.
It's not conceptual because that would just be ideas, arbitrary compared to physical ones.
And it's not mathematical, because that would only involve equations, graphs, and tables.
B umbilical cord it connects the baby and the mother together
Answer:
genus and species
Explanation:
Species is a class of individuals and genus is the rankings right below species
Is effect because you have to find in map]