1ill Blank question 2/3:
READING PASSAGE 2
Read the passage carefully and answer the questions below
Paragraph 1: I've spent ten years photographing sinkholes and heard all sorts of explanations -
some plausible, some just wild - as to why they occur. [Check out my previous blogs via the link below.]So when I saw these dramatic pictures on the news of a new sinkhole in Guatemala City, I decided to head down there to look for myself rather than take anyone else's word for it.
Paragraph 2: It's quite a scary sight. The hole, which is 18 meters wide and is estimated to be 100 meters deep, looks like someone has taken an enormous drill and drilled down into the earth. It's not the first time this has happened here. In 2007, a similar sinkhole appeared in a residential district of Guatemala City and was reported to have swallowed about a dozen homes.
Paragraph 3: It is known that most sinkholes are caused by a build-up of water in the soil over a natural cavity in limestone rock. The saturated soil's weight causes the cavity's roof to collapse and all the earth above with it. But in this case, there's no limestone bedrock. In fact, there's no solid rock undemeath at all. The city is built on rather loose volcanic debris. What is believed
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