The energy stored in rocks as a result of plate movement can be released in an earthquake.
D. high and low levels of silica in the different type of lava.
Explanation:
The volcanoes have different types of explosions. Some tend to be highly explosive, some less explosive, some don't have explosions at all, while some have combinations of different eruptions. The reason for this diversity in the eruption types is mostly the composition of the magma, or rather how high is the silica content in it.
Basically, the higher the silica level in the magma the higher the explosiveness, and the lower the silica level the lower the chances of explosiveness. This is the case because the higher amount of silica makes the magma thicker, so the gasses are trapped and they explode, while when the lower silica content makes the magma less thick, so the gasses are not trapped and explosions are lacking.
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.
Freezing point of the water is innate property. Therefore, I would say that the freezing point of water from 1 billion years ago would still be the same as to what temperature the water would freeze today. Thus, I choose letter D. 0°C.
