Explanation:
The St. Lawrence seaway helped because it was large enough to allow shipping transportation to the USA. Which allowed Canada and the USA to trade goods. The seaway extends from Montreal through the Welland Canal in Ontario, Canada, to the eastern portion of Lake Erie.
(Have a great day!)
Endemic diseases result in a decreasing population, so with that said you can rule out choices B and D.
Among the two left, letter A is the most appropriate answer. Not all endemic diseases have an effect on the number of children a population will have. So if we are speaking about endemic diseases in general, the answer is:
A. Endemic diseases can result in decreasing population numbers: many people die form diseases, and others move away from or avoid moving to places where diseases are rampant.
Labeled from left to right (left column 1-9 and right column 10-18), these are the answers.
Economic - 5, 6, 16
Social - 3, 4, 7, 8, 12, 18
Environmental - 1, 2, 9, 14, 15, 17
Political - 10, 11, 13
<u>Explanation</u>:
- Statements 5, 6 and 16 are related to the economy of China. 5 talks about how it is becoming richer, 6 talks about its currency and 16 talks about 2 major cities that contribute to China's economic growth.
- Statements 3, 4, 7, 8, 12 and 18 are related to the people of China. 3, 7 and 8 talk about the people in general and where they live in China. 4 and 18 talks about the staple food and the Chinese restaurants they have in the UK. 12 talks about the language they speak.
- Statements 1, 2, 9, 14, 15, 17 are related to the environment of China. They talk about the rivers, land, mountains, ocean, desert, and climate of China respectively.
- Statements 10, 11 and 13 relate to the political state of China. 10, 11 highlights the capital city and a great landmark in China. 13 talks about the relevant communist system present in China.
Answer:
D
Explanation:
If NASA had constructed a Space Shuttle without knowing if it would be safe for its passengers, there could be many casualties. So they would test it beforehand using a model, to make sure that it will be safe and sturdy for when they build it.
It comes from methane in their clouds