On July 31, 2014, scientists reported details of the evolution of birds from other theropod dinosaurs. Among the features linking theropod dinosaurs to birds are a furcula (wishbone), air-filled bones, brooding of the eggs, and (in coelurosaurs, at least) feathers.
Vitamin D Deficiency. People who are vitamin D-deficient can suffer some adverse effects, such as being more prone to certain cancers and possibly being affected by depression or other mood disorders, according to studies reported by MayoClinic.com.
Here are some of the most common symptoms of low vitamin D levels: Depression. Depression, as a symptom of low vitamin D concentrations, is caused by the parathyroid hormone. It is a well-known fact that some people are particularly depressed during the winter because they are not exposed to sunlight.