1.   Instead of splitting hydrogen sulphide, they developed the ability to split water by first trapping solar energy in green pigments.

2.   Chlorophyll is a group of green pigments.

3.   Chloroplasts make several products, including the green pigments chlorophyll A and B, the key machines in the factory of the leaf.

4.   The explosion was monitored mainly by measuring levels of chlorophyll, the green pigment of plants involved in the process of photosynthesis.

5.   The first step in photosynthesis is the absorption of a photon-a particle of light-by an antenna composed of the green pigment chlorophyll.

6.   There are several kinds of chlorophyll, which are green pigments.

7.   The green pigment happened to be verdigris, and it has started to corrode the paper which had supported it for so many years.

8.   The grass stays green because it lacks an enzyme that breaks down chlorophyll, the green pigment in plants used for photosynthesis.