Abiotic factors in a lake ecosystem include non-living components such as light, temperature, pH of the water and oxygen content. Biotic factors include living components of a lake such as bacteria, phytoplanktons, aquatic plants, zooplankton, crustaceans, molluscs, insects, fish and other vertebrates. Continue Reading.
To become a surgical tech, it's usually only a year. I believe it's a certificate program, not a degree. And I recommend that if you know you want to be in the OR and you want to assist with surgery, go for the surgical tech. Nurses have pretty much been phased out from actually assisting the surgeon.
How Long Does it Take to Become an Ultrasound Technician? It typically take two years to complete a Sonography certificate, with more advanced degrees or specializations taking up to four years. Most Sonographers hold an Associates Degree in Applied Science with a specialization in diagnostic medical sonography.