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------------------------------------------------ Which breeding methods were developed during and after the Green Revolution? Select all that apply.

a) Selective breeding
b) Hybridization
c) Genetic engineering
d) Artificial insemination

During and after the Green Revolution, breeding methods such as a) selective breeding, b) hybridization, and c) genetic engineering were developed to improve crop varieties. Selective breeding involves propagating plants with desirable traits, while hybridization crosses different plant varieties. Genetic engineering directly modifies genetic material to achieve specific characteristics in crops.

Explanation:

The breeding methods developed during and after the Green Revolution include selective breeding, hybridization, and genetic engineering. Selective breeding, also known as artificial selection, involves humans choosing plants with favorable traits to reproduce over generations, leading to traits like higher yield.

Hybridization is the process where two different plant varieties are crossed to produce a new variety that often contains the best traits of both parent plants. Lastly, genetic engineering is a more modern technology that involves directly altering the genetic material of an organism to achieve desired characteristics. This method can be used to improve disease resistance, enhance nutrient content, reduce the need for pesticides, and increase yields.