Answer:
it's A as they r the natural features on Earth
1. Around 1900 the first dams were built on the Muskegon river, and this immediately cause a problem in the ecosystem by being a blockade for the movement of the water species, as well as causing higher mortality by killing them in the turbines.
2. By 1950 more dams were built, and the there were even more blockades on the way of the water species, so their movement was restricted even more, the mortality rates skyrocketed because of the disposing of the oxygen, temperature change, river flows changing etc.
3. Even though the scientists miss information from the period before the dams were built, since the information have started to be gathered it has been very obvious that the main factor for ruining the ecosystems on the Muskegon river are the dams by causing all sorts of changes in the water.
The growth of port cities in Southeast Asia brought lot of new immigrants from China and India.
Explanation:
The European colonialism was spread out around much of the world. Southeast Asia too was conquered and colonized for certain period of time. The Europeans had big interest in this region because of its excellent strategic location, as well as because it was rich in multiple resources. Once the Europeans managed to gain full control over Southeast Asia they started to develop the port cities, which led to their rapid growth and became very attractive for the people to move in.
- Lot of people saw the port cities as good places where they can find opportunities to prosper, so there was large scale migration toward them.
- The migration toward the port cities was not just from the interior of the region, but also From other places, such as China and India.
- While lot of people migrated in these places willingly, some were actually brought by the Europeans as labor force.
- The number of Chinese and Indians was so large, that some areas became dominated by them, or in some regions they were the largest minority groups.
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It <span>would most likely be coarse gravel.</span>
In china it as a lot of the worlds population
