well, without the article, I'm guessing the main idea is about the Great Wall of China
As you go across a period, radius shrinks because you are adding protons. The added positive charge increases pull on the electron shells.
As you go down a group, radius gets larger because you are increasing shells of electrons. This increases shielding of the nucleus' positive charge, so the electrons are not pulled in as much.
Answer:
A. Calculating the mass of a product from the number of moles of reactants
Explanation:
Its the answer trust me
The outside has grass and trees
They might not be able to get enough sunlight in some cases and might die from it
