Answer this question in a complete and in your own words no links How do sustainable use programs (sustainable development) protect ecosystems?

As our current atmosphere formed, the concentrations of various atmospheric gases fluctuated. match each gas with the explanation that best describes how its proportion changed during the evolution of the atmosphere.

Explain in detail the events that led to the fall of the soviet union. explain the importance of the foreign policy shift from brinkmanship to détente during the cold war. be sure to include evidence to support your answer describe the challenges to nation-building that exist in africa today .

What would you call a political system that is only meant to last for a short time