What do biologists believe is to blame for the decrease in the amount of fish in the Columbia River? Question 3 options:

Pollution, a breach, and spawning

Fish hatcheries, fish ladders, and fishing

Fish hatcheries, pollution, and dams

Dams, a breach, and pollution

Which statements describe how reformers fought for social change in the progressive era? check all that apply. 1. they founded a state university to promote industrialization. 2. they began a civil rights movement to promote equality between races. 3. they made it legal to manufacture and sell alcohol. 4. they built thousands of new schools and required attendance. 5. they promoted abstinence from alcohol and supported prohibition.

What was an important consequence of the neolithic revolution? ):

How do we make changes to the us constitution? a. through presidential order. b. through direct primary elections. c. through the amendment process. d. we can't!