What does a branching tree diagram show? A. The evolution in the size of organisms
B. The order in which specific traits may have evolved
C. The animal population in a specific time period
D. The rate of extinction of specific traits in living organisms

B. The order in which specific traits may have evolved

Explanation:

neutrons are in the middle of the atom and the electrons, which are much smaller.

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !