资讯

Provides an introduction to Earth's biomes, explaining how they are communities of living organisms shaped by climate and geography. Key factors influencing biomes include light and water availability ...
The tundra biome is the coldest biome on Earth. They receive very little rainfall, even less than a desert. However, the tundra is a rather wet place. How is this so? See the video to learn more.
Scientists worldwide suggest global warming from increasing greenhouse gas emissions is worsening. If emergency steps aren’t taken, a meltdown of Arctic ice is imminent especially since a new ...