Humans Affect Environment Crossword Puzzle

QUESTIONS LIST:

• endangered : a species that is in threat of extinction
• farming : growing crops and raising livestock
• pollution : the introduction of harmful substances or products into the environment:
• habitat : an ecosystem or natural environment where animals live
• economy : the exchange of resources and money
• navigation : directing the course of a ship, aircraft, or guided missile
• industry : trade or manufacture of products
• highway systems : a network of roads connecting cities and countryside.
• native species : species that live in a region naturally
• population : the number of people in a specific region
• volcano : a vent in the earth's crust through which lava, steam, ashes are expelled.
• ecosystem : the interaction of a community of organisms with their environment.
• transportation : a way to move people and goods from place to place
• dredging : machinery digs up sediment to open up navigation channels in the great lakes
• irrigation : to move water to areas where it is needed through pipes, canals, and sprays.
• invasive species : when species are brought into an ecosystem where they do not naturally live