Find the mean (average) 60% 8%,70%,80%

What are some of the impacts of humans on the earth?

Permafrost occurs in the tundra and tundra-forest biomes of eastern europe

Which statements explain how lakes form? check all that apply. lava flows block a river. streams flow into shallow areas. groundwater feeds into low-lying areas. ice sheets leave depressions that fill with water. movement of earth’s crust creates low areas that fill with water.