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.
Mad cow disease, also known as bovine spongiform encephalopathyor BSE, is a fatal disease that causes degeneration of the brain tissue in infected cows. The condition, when transmitted to humans, can cause variant Creutzfeldt-Jakob disease, or vCJD, a very rare and fatal brain disease in humans that has similar symptoms (for example, ataxia, jerky movements, seizures) to those seen in BSE.