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Black smoker chimneys are structures made of minerals that form around hot springs on the ocean floor, more than 2 km below the surface. Rare organisms live on and around the chimneys. A natural history museum wants to collect some black smoker chimneys for a new exhibit hall. They also want to better understand chimney ecosystems and how the chimneys form. Before setting off on the expedition, a team of biologists, chemists, geologists, and engineers gets together to plan how to cut the chimneys down and bring them up to the surface and back to the museum without damaging them and with minimal damage to the ecosystem. They ultimately decide to place a metal cage and ropes around each chimney, use an underwater chain saw to cut it down, and then use a long rope to pull it up to the surface. Indicate whether each activity below is an example of (a) modeling, (b) ranking criteria, (c) troubleshooting, or (d) evaluating tradeoffs. a. The team decides to spend the last day gathering more data about the seafloor instead of trying to bring up another chimney. b. The scientists discuss which is more important: collecting a chimney that is still growing or collecting a chimney that is no longer growing. c. The engineers calculate the weight of the chimney in water and then use that information to figure out how strong the rope used to pull the chimneys up must be. d. A piece of the first chimney breaks off on the way up to the surface. The engineers decide to secure the second chimney with more loops of rope.