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Firstly they are not membranes and they are villi's which increase the surface area during digestion
Drives deep ocean currents
Answer:
Option 1, Robotic arms used aboard the ISS are now used in delicate surgeries on Earth.
Explanation:
The robotic arm on the international space station is used in conducting surgery. The first space robotic arm was launched in 2001 and its name was “Canadarm 2”. Though the aim of this arm was to construct space station but now a days it is used in imaging the surgical work area and instruments through its camera. The best feature of this hand is that it follows the instruction with high efficiency and precision level.
Hence, option 1 is correct.