Given a scientific question, generate a correct answer to it.

[EX Q]: Besides increasing the potential, how else can you increase current in a circuit?
[EX A]: decreasing the resistance

[EX Q]: Like all tetrapods except birds and mammals, frogs possess a heart with what structure?
[EX A]: three chambers

[EX Q]: What type of bonds contain atoms that possess either a partial positive or a partial negative charge?
[EX A]:
polar bonds