Answer:
trees give oxygen to humans and animals Wich they need to breath in order to survive, by planting many kinds of trees the rare and the species that are going extinct can be preserved and trees also protect the land from salinity and soil degradation, they also protect the land from floods.
A functional disorder is a medical condition that impairs normal functioning of bodily processes that remains largely undetected under examination, dissection or even under a microscope. At the exterior, there is no appearance of abnormality. This stands in contrast to a structural disorder (in which some part of the body can be seen to be abnormal) or a psychosomatic disorder (in which symptoms are caused by psychological or psychiatric illness). Definitions vary somewhat between fields of medicine.
Generally, the mechanism that causes a functional disorder is unknown, poorly understood, or occasionally unimportant for treatment purposes. The brain or nerves are often believed to be involved. It is common that a person with one functional disorder will have others.
Answer:
Detritus is important too wetland ecosystems, because it provides a food source for a variety of aquatic organisms.
Explanation:
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