Human development is a science because there are many different factors in human development that are used and a lot of them are science factors.
Eukaryotic cells differ from each other due to their structure and function. Though, two eukaryotic cells could differ in the number and types of organelles they contain.
I am no expert but I think the correct answer is C.
Answer:
Atomic number: 13
Electron Configuration:[NE] 3s²3p¹
Valence electron: 3
