Aparticular power source contains a chemical that releases electrons on one side and a chemical that accepts the electrons on the other side. this flow of electrons from one side to the other provides power. what power source does this process describe?

a. an electric outlet
b. an electromagnet
c. an electric cord
d. a battery

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 method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots

Stage in which a typical star has completely stopped fusion