Alfred Marshal was one of the most influential economists of his time and the author of the Principles of Economics book which was the principal economic textbook in England for long years. During his economic theory development, he borrowed a concept from the marginalists which is the theory of demand and the collective result of buyers who yearns services and products or the concept of scarcity.
The answer is; genetic diversity
Genetic diversity is the number of genetic characteristics in a population. Genetic diversity is important in a population especially in its adaptability to a changing environment. The diversity is acted upon by natural selection and enables the population to evolve with the changing environment.
<span>selective breeding
recombinant DNA
hybridization
cloning
induced mutations</span>
<span>bacteria - living
virus</span> - non living<span>
moss</span> - living<span>
you</span> - living <span>
a lemon seed</span> - living<span>
The air</span> - non living<span>
bread</span> - non living<span>
lettuce</span> - living<span>
rocks</span> - non living
