Answer: I think it‘s 1, it just makes more sense. Sorry if I am wrong but hope this helps anyone.
C. calcium is your answer
Answer and Explanation: The excretory system helps the respiratory system by getting rid of carbon dioxide. The respiratory system helps the excretory system by getting rid of CO2 from the body. They both need each other and if one or the other did not exist, we might've not been able to survive. Tis demonstrates how vital they are for the human body.
Answer:
Ionic bonding When metals react with non-metals, electrons are transferred from the metal atoms to the non-metal atoms, forming ions . The resulting compound is called an ionic compound .
Explanation:
The highest power objective because you will see the specimen perfectly
