U1W3

alter

• to change

• to fall down or cave in

• a difficult or dangerous situation

• great damage or to ruin

collapse

• to change

• to fall down or cave in

• a difficult or dangerous situation

• great damage or to ruin

crisis

• to change

• to fall down or cave in

• a difficult or dangerous situation

• great damage or to ruin

destruction

• to change

• to fall down or cave in

• a difficult or dangerous situation

• great damage or to ruin

hazard

• can cause harm or dangerous

• harsh or serious

• a great amount or a lot

• can't tell or you can't guess something will happen

severe

• can cause harm or dangerous

• harsh or serious

• a great amount or a lot

• can't tell or you can't guess something will happen

substantial

• can cause harm or dangerous

• harsh or serious

• a great amount or a lot

• can't tell or you can't guess something will happen

unpredictable

• can cause harm or dangerous

• harsh or serious

• a great amount or a lot

• can't tell or you can't guess something will happen