Which is not an essential component of a voltaic cell?

a. negative electrode (anode)

b. positive electrode (cathode)

c. electrolyte

d. voltmeter

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

What type of electromagnetic radiation has a shorter wavelength than blue light

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?