Answer:
The temperatures are so cold that there is a layer of permanently frozen ground below the surface, called permafrost. This permafrost is a defining characteristic of the tundra biome. Mosses, sedges, and lichens are common, while few trees grow in the tundra.
Explanation:
Answer:
Sunlight, water, and carbon dioxide
Explanation:
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
Energy is transferred from the Sun to Earth mainly by 
.
D. electromagnetic waves. ✔
The tropical rainforests have the most biodiversity.
Answer:
the benefit of using hydrogen combustion over fossil fuel combustion is that it releases fewer emissions-water is the only major byproduct. No carbon dioxide is emitted, and nitrogen oxides, produced by a reaction with the nitrogen in the air, can be significantly lower than with the combustion of fossil fuels.
Explanation:
shown above
