1 Red algae and green algae include unicellular species, colonial species, and multicellular species. 2  These protists have a special photosynthetic species that are the base of the food web in some habitats. Stramenopiles main characteristic is the flagellum that each protist has. 2  In most protists in this phylum, the hairy flagellum is paired with a short smooth flagellum. o Diatoms: Diatoms are unicellular and are producers of the food chain. 3  These organisms have a cell wall that is made of silica.
Parkinson's disease is a chronic, degenerative neurological disorder that affects one in 100 people over age 60. While the average age at onset is 60, some people are diagnosed at 40 or younger.
Risk factors for Parkinson's disease include: 1  Age - Parkinson's disease is more common (with 75 percent of people developing the disease after age 60) up to the age of 80, when it then becomes less common again. 2  Sex - Men are slightly more likely to develop Parkinson's disease than women.