Final answer:
Organisms like bacteria, viruses, protozoa, and internal parasites can cause diseases in humans, such as tuberculosis, malaria, pneumonia, influenza, and AIDS. Some organisms, like certain gut bacteria, have beneficial effects on human health. Indirect effects on human health can occur through crop destruction and zoonotic diseases. Examples of organisms with impacts on human health include pathogenic bacteria, protozoa, fungi, and viruses.
Step-by-step explanation:
Human Diseases Caused by Organisms:
Bacteria, viruses, protozoa, and internal parasites are some of the organisms that can cause human diseases. Examples of diseases caused by these organisms include tuberculosis, malaria, pneumonia, influenza, whooping cough, dysentery, and Acquired Immune Deficiency Syndrome (AIDS). These diseases can be transmitted through direct contact, contaminated food or water, or insect bites.
Beneficial Effects of Organisms:
While some organisms cause diseases, others have beneficial effects on human health. For example, certain bacteria in the gut help with digestion and vitamin synthesis. Some microorganisms produce antibiotics that can be used to treat bacterial infections. Other organisms, like plants, provide us with food, medicine, and oxygen.
Indirect Effects on Human Health:
Organisms within this group can indirectly impact human health, such as through crop destruction leading to famines. For example, locust swarms that consume crops can cause food shortages and malnutrition. Additionally, some diseases that affect animals, like zoonotic diseases, can transmit to humans and cause indirect health impacts.
Specific Examples of Organisms:
Some specific examples of organisms within this group that have impacts on human health include:
Pathogenic bacteria: causing diseases like tuberculosis and diphtheria.
Protozoa: causing diseases like malaria and amoebic encephalitis.
Fungi: causing diseases like athlete's foot and ringworm.
Viruses: causing diseases like influenza and AIDS.