Why did the Russians promise to protect the Serbians? Explain.

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Iam stuck on this question! 45 points : ) how do increases in temperature affect the density of ocean water? answer choices: (a) density does not change (b) density increases (c) density becomes variable (d) density decreases

Agricultural practices in the united states nearly led to the extinction of the peregrine falcon during the 1950s and 60s.