When a leaf has a high concentration of chlorophyll relative to other pigments, the leaf appears green.
(a leaf; has; a high concentration of chlorophyll relative to other pigments) (the leaf; appears; T:When a leaf has a high concentration of chlorophyll relative to other pigments)
a leaf the leaf
has appears
a high concentration of chlorophyll relative to other pigments
T:When a leaf has a high concentration of chlorophyll relative to other pigments