Nekton are animals and plants that float passively in the marine environment. Indicate whether the statement is true or false
F
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Only animals are considered invasive species.
Answer the following statement true (T) or false (F)
From the 1930s to the 1950s, an X-ray machine called a shoe-fitting fluoroscope was common in shoe stores
People would try on shoes, stand with their feet in the machine, and allow the salesperson to view live images of the bones of their feet in the shoes! Sometimes the salesperson would reach down and adjust the person's shoes for a better image. These machines used X-rays and exposed the feet of customers to 5 to 30 seconds of radiation. Further, lower doses of radiation exposure also occurred within about 10 to 15 inches of the outside of the machine. If you were looking for medical problems resulting from the use of these fluoroscopes in shoe stores, where would you expect the greatest harm? A) customers who had their feet exposed to the X-ray device B) the salespeople who operated the machine to sell shoes C) salespeople who worked in nearby stores D) the salesperson who worked behind the cash register in the store
In the shorelines investigation, what shoreline feature is represented by the very steep topography along the western coast (left side of island)?
A. marine terrace B. delta C. sandy beach D. submerged coastline E. sea cliffs F. spit and sand bar
Which of the following is NOT associated with many braided streams?
A. a range of sediment sizes, including sand and gravel B. cutoff meanders C. an abundant supply of sediment D. a broad sediment-covered plain