Which One is what there is no question here
Answer:
a. Its consideration of environment impact (such as accommodation for fish) became a model for future dam projects on western rivers
Explanation:
The Columbia River project was a project of great significance for the whole region, especially for the state of Washington. This project had many positive impacts such as production of electricity, irrigation for more than half of the farmlands, development of the area, opening up new jobs. One very big problem though was the impact on the species of fish in the river. As most of them are migratory species, with the building of the dam they were stopped in their movement, thus they became restricted to the upper part of the river. Also, the water and composition of the water changed, and all of these things contributed to significant reduction of the populations of the native species of fish.
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President Donald Trump on Thursday, March 1, announced that his administration planned to impose a 25% tariff on imported steel and a 10% tariff on imported aluminum. His argument was rooted in the notion that other countries' trade practices have undermined U.S. production and could potentially compromise national security at home.
While protectionists and free trade advocates erupted into a fierce debate, the stock market tumbled. The Dow Jones Industrial Average shed 420 points, or 1.68%, on Thursday, the S&P 500 lost 1.33% and the Nasdaq declined 1.27%.
It's important, then, to know how important steel and aluminum are to the U.S. economy.
After all, as much as 55% of a car's total weight comes from steel, according to the World Steel Association. Roughly 50% of steel use goes toward buildings and infrastructure. And about 16% of steel goes toward making mechanical equipment.
