Importance and Value of Trees. Since the beginning, trees have furnished us with two of lifeâs essentials, food and oxygen. As we evolved, they provided additional necessities such as shelter, medicine, and tools. Today, their value continues to increase and more benefits of trees are being discovered as their role expands to satisfy the needs created by our modern lifestyles.
There are diseases that can be transferred to humans from psittacine birds, such as parrots and budgies, such as a viral infection. In addition, people can also show an allergic reaction to feathers and other bird products.
Lesson Summary â¢ Most protist diseases in humans are caused by protozoa. Protozoa make humans sick when they become human parasites. Trypanosoma protozoa cause Chagas disease and sleeping sickness. Giardia protozoa cause giardiasis, and Plasmodium protozoa cause malaria. Identify three ways fungi can make humans sick. Vocabulary â¢ athlete's foot â¢ candidasis â¢ giardiasis â¢ malaria â¢ ringworm Introduction Protists and fungi may seem defenseless, but they can be deadly. Both are important causes of disease and death in other living thingsâincluding humans.