Define:
(i) Genetic erosion (ii) Bioinsecticides (iii) Antigen (iv) Psychosis

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Define:
(i) Genetic erosion (ii) Bioinsecticides (iii) Antigen (iv) Psychosis

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(i) Genetic erosion refers to the process in which a plant or animal species faces a gradual or drastic loss of its unique gene pool and genetic adversity due to urban expansion, deforestation etc.
(ii) Bioinsecticides are living organisms like insects, bacteria, which themselves or their products are used to control insect pests.
(iii) An antigen is a toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.
(iv) Psychosis is a kind of mental illness in which the person has no idea about his condition, loses contact with reality and cannot function in society.

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