The graph below shows the salmon population, in thousands of pounds, in the Columbia River, from 1866 to 1983. The graph below shows the salmon population, in thousands of pounds, in the Columbia River, from 1866 to 1983. Salmon populations increase between 1866 and 1879, then fluctuate at a steady rate between 1879 and 1931. From 1931-1983, the salmon population steadily decreases. Based on the graph, which of these conclusions is most likely correct? Question options: A large amount of contaminants were present in the river between 1910 and 1912. A series of large hydropower units were built on the river after 1931. The salmon did not breed between 1866 and 1879. The hydropower units on the river were deactivated after 1970.

Competition occurs between species when

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

Me plz he did not infringe upon the policy making powers that he felt the constitution gave congress. but the determination of foreign policy became preponderantly a presidential concern. when the french revolution led to a major war between france and england, washington refused to accept entirely the recommendations of either his secretary of state thomas jefferson, who was pro-french, or his secretary of the treasury alexander hamilton, who was pro-british. rather, he insisted upon a neutral course until the united states could grow stronger. which provides the best objective summary of this excerpt? president washington made a good choice when he decided not to accept the recommendations of his advisors and instead insisted that the united states stay neutral during the war between france and england as president, washington believed that the united states should remain neutral in foreign policy even though he had advisors who recommended that he take sides during the war between france and england. washington did not make policy decisions during his presidency because he did not want to interfere with the policy-making powers that the constitution gave congress. washington refused to accept entirely the recommendations of either his secretary of state thomas jefferson, who was pro-french, or his secretary of the treasury alexander hamilton, who was pro-britis