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.
Mononucleosis is an infectious illness thatâs sometimes called mono or âthe kissing disease.â While you can get the virus that causes it through kissing, you can also get it in other ways like sharing drinks or utensils. Itâs contagious, but youâre less likely to catch mono than other illnesses like the common cold. Mono isnât usually a serious illness, but it can lead to complications that in some cases make the disease more dangerous. The symptoms of mono can be mild, but they can also become very severe.