Gaia hypothesis

The hypothesis developed by James Lovelock that postulates that the entire biosphere is a single, self-organising, non-linear system. Gall

An abnormal plant growth, usually more or less spherical, and usually induced by a plant parasite. Gamete

A sexual haploid cell that may be male of female, and which unites with another gamete of the opposite sex to produce sexual recombination in a zygote, which is diploid . In plants, the male gametes are called pollen, and the female gametes are ovules. Gametic sterility

Sterility that results from the fact that either the male or the female gametes are infertile.

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