If an electron emits a photon with a wavelength of 656 nm when it drops from the third quantum level to the second quantum level, what color of visible light does it emit? A. violet B. red C. blue D. yellow

Ants live on acacia trees in south america. the ants feed on sugars secreted by the trees. the trees provide room for the ants to live. the ants sting any other insect or animal that comes to eat the trees. what type of relationship is this?