The presence of different ethnic groups within Russia: a- promotes political unity

b- held hold the Soviet Union together

c- is a threat to the unity and the existence of the state

d- has been an economic asset

Select the correct text in the passage. the moving continents affect all subsystems on earth. which sentence identifies a potentially negative consequence of shifting continents? the supercontinent pangaea began to break up about 175 million years ago. [during this process, more coastline was exposed as the landmasses separated]. [the rearrangement and displacement of these huge landmasses resulted in the diversity of plants and animals we see on earth today]. [the movement of the plates sometimes leads to earthquakes and tsunamis]. however, over the long course of earth's history, their effects are usually minimal. in oceans, the plate movements usually lead to seafloor spreading. [seafloor spreading often results in the formation of underwater ranges of mountains].

Hey, i was what is consisted in a sustainable city? like what unique designs they have, etc. for answering ; )

Which two nations are doing the most to combat their environmental issues?