According to the continental drift theory, the supercontinent
Pangaea began to break up about 225-200 million years ago, eventually
fragmenting into the continents as we know them today.
Answer:
20. x= 263.3 yd (nearest tenth)
21. x= 0.6 km (nearest tenth)
Explanation:
Please see attached picture for full solution.
Answer:
An example of how language can be divisive is the dominance of French in Quebec and English in the rest of Canada.
Explanation:
A is not correct because it simply describes a family of closely related languages, which is unifying more often than not, not the other way around.
B is not correct because this statement is not true, as the United States, as all countries in the world, has official language/s.
C is correct because here we have a situation where within one country there are two dominant languages, and the people also use them in order to distinguish themselves from the others, causing tensions in the process, as well as movements toward separation.
D is not correct because such a thing may or may not be problematic, as we do have examples of both around the world.
A deciduous forest, as a coniferous forest is generally evergreen, a desert’s trees rarely bear leaves, and a rainforest is clearly not depicted in the image.
'Climatic variations' and 'Human activities' can be regarded as the two main causes of desertification. removal of the natural vegetation cover（by taking too much fuel wood）, agricultural activities in the vulnerable ecosystems of arid and semi-arid areas, which are thus strained beyond their capacity.
