a layer of frozen ground called permafrost covers the tundra. it is melting rapidly due to global warming…

a layer of frozen ground called permafrost covers the tundra. it is melting rapidly due to global warming. and or but so ← joining words ① combine the sentences into one sentence. use one of the joining words. type your answer here.

a layer of frozen ground called permafrost covers the tundra. it is melting rapidly due to global warming. and or but so ← joining words ① combine the sentences into one sentence. use one of the joining words. type your answer here.

Answer

Brief Explanations:

The first sentence states a fact about permafrost covering the tundra. The second sentence gives a consequence (melting) due to a cause (global warming). "So" is used to show a cause - effect relationship.

Answer:

A layer of frozen ground called permafrost covers the tundra, so it is melting rapidly due to global warming.