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meganwintergirl
27.03.2020 •
Biology
1. How did people 1st map the ocean floor?
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Ответ:
Echo sounding is the key method scientists use to map the seafloor today. The technique, first used by German scientists in the early 20th century, uses sound waves bounced off the ocean bottom. ... The time taken for the sound to travel through the ocean and back is then used to calculate water depths.
Ответ:
used sound waves that bounced off the ocean bottom. the time taken for the sound to travel through the ocean and back is then used to calculate water depths
Ответ:
passive transport
Explanation:
The movement of ions across a cellular membrane without the need for energy input is known as passive transport. Diffusion is the passive movement of molecules from an area of high concentration to low concentration. Voltage describes the difference in electrical potential between two separate points, and isotonic movement describes the activity of a system at equilibrium.