Which can cause a harmful change to an ecosystems

Jane determines x = 4 and y = 1 is the solution to the following system of equations.

To reinforce your understanding of the early days of the great depression, take the perspective of president herbert hoover. from his perspective, write three to five sentences that develop and expand on the following topic sentence: i believe the best way to end the great depression is . .

Which of the following associations is incorrect? a. franklin d. roosevelt-social security b. theodore roosevelt- conservation of natural resources c. franklin d. roosevelt- the panama canal d. theodore roosevelt-the russo-japanese war