Define prodigality of production.

From the hint given below, (a) Identify the person in the picture. (b) Mention the famous book written by him. (c) Name the research field which he was famous for? [Hints: finches - prodigality of production - Intraspecific struggle - speciation - Russel Wallace-selection ]

Define productivity.

Define radicle.

Define solubility.

Define solubility

Define primary productivity .