The correct answer is B. Homeostasis
I think it’s C atomic radius and numbers of unshielded protons
Answer:
covalent bond
Explanation:
a covalent bond happens between two nonmetals
a ionic bond happens between a metal and a non metal
CO2 is a bond between carbon and oxygen
carbon and oxygen are both non metals therefore CO2 is a covalent bond
Yes, but they are tubular organs and like all other organs are made up of tissues