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.
Bovine Spongiform Encephalopathy (BSE) is the bovine (cattle) form of a group of diseases called transmissible spongiform encephalopathies (TSEs). TSEs are chronic degenerative diseases that affect the central nervous system of the infected animal. They are known to occur in sheep and goats (scrapie), deer and elk (chronic wasting disease), mink (transmissible mink encephalopathy) and domestic cats (feline spongiform encephalopathy). Cattle suffering from BSE are often irritable and can react violently to stimuli that normally do not impact healthy animals.