Questions

Resistivity :

Resistivity is a measure of the resistance to the flow of electrons. 

Conductivity :

Conductivity is just the inverse of resistivity, σ = 1/ρ, where σ is conductivity and ρ is resistivity.

Example:

Think of a pipe and water, the bigger the pipe, the easier water can flow and thus the lower the resistance. 

The given statement "All bones stop growing by the end of adolescence" is a FALSE statement.

Cerebrum is the largest region of the brain.

An octopus have 3 hearts, 9 brains and 8 tentacles.

According to cell theory, Cells being formed from pure water is impossible.

Johann Strauss's on the Banks of the Beautiful Blue Danube

It is the protocol the routers in neighboring autonomous systems use to identify the set of networks that can be reached within or via each autonomous system.