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.
However, the most serious is called psittacosis. With this disease, an agent called Chlamydia psittaci causes it, and the disease is also called ornithosis. Birds can be asymptomatic carriers, and may only fall ill when upset, as stress is a major component in all avian diseases.
Mad Cow Disease is the common term for Bovine Spongiform Encepholopathy (BSE), a progressive neurological disorder of cattle which can be transmitted to other species, including humans. In humans, it is called Creutzfeldt-Jakob Disease, after the two doctors who first described the symptoms of the disease.he disease in cattle is called Bovine Spongiform Encepholopathy because this form of the disease occurs in cows (therefore, the term bovine), it causes a sponge-like destruction of the brain (therefore, the term spongiform encepholopathy-enceph means.