the theory of plate tectonics states that the crust of earth is divided into plates which are slowly moving
Explanation:
Answer:
chemical reaction that involves the transfer of an electron is classified is an oxidation and reduction reaction oxidation is the process of losing an electrons while reduction is a process of gaining them. any chemical that cause another chemical to use electrons oxidized is called an oxidizing agent
Answer: I can only help you with one
4. D because you need data fro what ever your doing.
thats as much as i can help vote me the brainleirst
The placenta and the umbilical cord