1. barriers block females to lay their eggs：调整大坝限时开放和水流temporary adjustment ，hooligans only hatch in spring，so we can let more water go through dams to carry more sands and gravel
2. bycatch (fishers use nets to capture shrimps and hooligans will be caught by accident in this way)：redesign the nets to catch shrimps only
3. food competition：add more food like多养殖Krill(屏幕给了词)，这是the Pacific hake和hooligan共同的食物，减缓食物竞争。
People in communities can make decisions that protect and improve the natural environment. Which ONE of the following three actions is MOST useful for people to do if they want to help the environment in their local community? Why?
1. Plant trees and create parks
2. Persuade local shops to stop providing plastic bags to customers
3. Increase access to public transportation (for example, buses or trains) to reduce the number of automobiles on local roads
Use specific reasons and examples to support your answer.