12- (1 point) Which of following is not true for sills in Puget Sound-.docx

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12. (1 point) Which of following is not true for sills in Puget Sound? a. Sills impede the waterway's ability to flush out pollution and restore healthy oxygen levels. Because of sills, some fraction of water and its dissolved and suspended constituents do not leave the area immediately but make additional trips. b. Sills are submarine dams or rises in the seabed. c. Sills are located at Admiralty Inlet, Hood Canal, and Tacoma Narrows. Sills make each basin has equal residence time. dd Sills greatly accelerate flow. e. Sills force upwelling of dense sea water and then force mixing with freshwater. .

$12. (1 point) Which of following is not true for sills in Puget Sound? a. Sills impede the waterway's ability to flush out pollution and restore healthy oxygen levels. Because of sills, some fraction of water and its dissolved and suspended constituents do not leave the area immediately but make additional trips. b. Sills are submarine dams or rises in the seabed. c. Sills are located at Admiralty Inlet, Hood Canal, and Tacoma Narrows. Sills make each basin has equal residence time. dd Sills greatly accelerate flow. e. Sills force upwelling of dense sea water and then force mixing with freshwater.$

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2/4/22 James Urton, University of Washington News "Mosquitoes appear to use odors to help them distinguish what is nearby, like a host to bite," said senior author Jeffrey Riffell, a UW professor of biology. "When they smell specific compounds, like CO 2 from our breath, that scent seems to stimulate the eyes to scan for visual patterns that are associated with a potential host, and head to them." It's similar to what might happen when humans smell something good. "Imagine you're on a sidewalk and you smell pie crust and cinnamon," said Riffell. "That's probably a sign that there's a bakery nearby, and you might start looking around for it. Here, we wanted to learn what visual elements mosquitoes are looking for after smelling their own version of a bakery." Past research by Riffell's team and other groups showed that smelling CO 2 boosts female mosquitoes' activity level -- searching the space around them, presumably for a host. For this experiment here, Riffell's team Past research by Riffell's team and other groups showed that smelling CO 2 boosts female mosquitoes' activity level -- searching the space around them, presumably for a host. For this experiment here, Riffell's team would track behavior of female yellow fever mosquitoes (Aedes aegypti) after they were exposed to CO 2 . (Like all mosquito species, only females drink blood, and bites from A . aegypti can transmit dengue, yellow fever, chikungunya and Zika.) The researchers wondered, would mosquitoes' eyes prefer certain wavelengths (i.e., colors) in the visual spectrum? To address their question, the researchers used miniature test chambers in which they placed different colored dots (green, blue, purple, red, orange, black, and cyan) at the bottom of the chambers. For their test, they first sprayed CO 2 into the chambers, and then introduced individual mosquitoes into the miniature test chambers. They then recorded how attractive each color was to the mosquitoes. a) The type of gas sprayed into the chambers would have no effect on the average number of contacts (with their mouthparts) with the walls of the chamber. b) The average flight speed of mosquitoes increased significantly with higher concentrations of CO 2 sprayed into the chambers. c) The average number of contacts (with their feet) with the walls of the chamber would vary significantly among different odors. a) ine average amount or time mosquitoes spent looking at each dot would not differ significantly among different colors. e) The mosquitoes would display a similar flight speed regardless of the amount of CO 2 sprayed into the chambers. f) The average number of contacts (with their feet) with the walls of the chamber would not differ significantly among different odors. g) The mosquitoes would spend significantly more time looking at dots of certain colors compared to other colors. h) The average number of contacts (with their mouthparts) with the walls of the chamber would be significantly higher when CO 2 was .

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