Description : The harmful substances produced by the microbes are known as – (1) Antibiotics (2) Pollutants (3) Hormones (4) Toxins
Last Answer : (4) Toxins Explanation: Toxins are substances created by plants and animals that are poisonous to humans. Most toxins that cause problems in humans are released by microor-ganisms such as bacteria, viruses, fungi, rickettsiae or protozoa. For example, cholera is due to a bacterial toxin.