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When World War II started, tonnage levels at the port decreased and shipping activities were suspended; however, the war did provide economic benefits for the city. Petrochemical refineries and manufacturing plants were constructed along the ship channel because of the demand for petroleum and synthetic rubber products by the defense industry during the war. Ellington Field, initially built during World War I, was revitalized as an advanced training center for bombardiers and navigators. The Brown Shipbuilding Company was founded in 1942 to build ships for the U.S. Navy during World War II. Due to the boom in defense jobs, thousands of new workers migrated to the city, both blacks and whites competing for the higher-paying jobs. President Roosevelt had established a policy of non-discrimination for defense contractors, and blacks gained some opportunities, especially in shipbuilding, although not without resistance from whites and increasing social tensions that erupted into occasional violence. Economic gains of blacks who entered defense industries continued in the postwar years.

What kind of refineries were built along the Houston ship channel?
Answer: Petrochemical
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During weekday lunchtime, over 150 lunch carts and food trucks from neighborhood restaurants cater to different student populations throughout Yale's campus. The carts cluster at three main points: by Yale New Haven Hospital in the center of the Hospital Green (Cedar and York streets), by Yale's Trumbull College (Elm and York streets), and on the intersection of Prospect and Sachem streets by the Yale School of Management. Popular farmers' markets, managed by the local non-profit CitySeed, set up shop weekly in several neighborhoods, including Westville/Edgewood Park, Fair Haven, Upper State Street, Wooster Square, and Downtown/New Haven Green.

What New Haven non-profit manages the farmer's markets that service various neighborhoods weekly throughout the area?
Answer: CitySeed
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Birds need to alter their metabolism in order to meet the demands of migration. The storage of energy through the accumulation of fat and the control of sleep in nocturnal migrants require special physiological adaptations. In addition, the feathers of a bird suffer from wear-and-tear and require to be molted. The timing of this molt - usually once a year but sometimes twice - varies with some species molting prior to moving to their winter grounds and others molting prior to returning to their breeding grounds. Apart from physiological adaptations, migration sometimes requires behavioural changes such as flying in flocks to reduce the energy used in migration or the risk of predation.

Why do birds need to molt?
Answer:
feathers of a bird suffer from wear-and-tear