Fires through the Indonesian countryside are due to a natural phenomenon.

Listen to the conversation and mark each statement as either true（T） or false（F） according to what you hear.
W: Fires burn through the Indonesian countryside, spreading thick smoke across parts of the country. Do you know what has caused them?
M: As far as I know, they aren’t due to extreme weather or any other natural phenomenon, but are instead part of a man-made process called slash and burn. This process of cutting down and burning trees in order to plant new crops is used by many countries.
W: Unfortunately, these fires produce thick smog that causes numerous negative health effects, which in turn has disrupted flights and forced the closure of schools in certain regions.
M: Yes. And we cannot be sure how long the school will be closed. Every two days we are updated on the situation by the state’s Education Department and determine whether or not to reopen the school.
W: Visibility in these conditions is poor—around only 80 metres—and flights to and from the city’s airport have either been delayed or canceled.
M: Yes. So far, there have been no arrivals or departures today. Of the 74 flights scheduled for today, 19 have been canceled. As a tour agent, I feel disappointed as many tour groups have ended up canceling their trips.
W: The negative health effects of this blanket of smog cannot be underestimated, either. In South Sumatra, one of the main centres of the fires, 22,585 cases of acute respiratory tract infections have been reported in just a few days.
M: Countries use slash-and-bum techniques every year, causing similar health problems and disruption to everyday life. I think current laws are not strict enough to prevent this from happening.