Answer:
atomic number
Explanation:
atomic number is the number of protons
Answer:
Everything in Earth's system can be placed into one of four major subsystems: land, water, living things, or air. These four subsystems are called "spheres." Specifically, they are the "lithosphere" (land), "hydrosphere" (water), "biosphere" (living things), and "atmosphere" (air).
Explanation:
If a person weighs 63.4 KG they will weigh 139.773 but if you estimate it which in most cases you do it would be 139.8 :)
Answer is D. The periodic table rows are arranged by increasing atomic number. The atomic number is decided by how many protons they have.
