Answer:early models of telephones were used with a twirl of numbers
Explanation:
Not advanced technology
Answer:
hydrogen bonding
Explanation:
The two strands of DNA are held together by hydrogen bonds between complimentary nucleotides.
Answer:
RbF
mgo
nh4cl
because electrons are lost by and element forming a cation and gained by the other element forming an anion and held together by electrostatic forces
It is the boilimg point now aa
