“Even while” in “In 2020, even while economies bent under the weight of Covid-19 lockdowns” (opening sentence) indicates the text will show that two situations are

After two collapses, a third dam at ‘imminent risk of rupture’
  A dam holding back mining waste from a Brazilian miner is at risk of collapsing, a government audit says. The same company was responsible for two tailings dam collapses since 2015 that unleashed millions of gallons of toxic sludge and killed hundreds of people in Brazil’s southeastern state of Minas Gerais, which has been known worldwide as the Brumadinho Dam Collapse.   The retired Xingu dam at Alegria iron ore mine in Mariana — the same municipality where a tailings dam collapsed in November 2015 in what’s considered Brazil’s worst environmental disaster to date — is at “serious and imminent risk of rupture by liquefaction,” according to an audit report from a local state organ. The report says the Xingu dam “does not... Ver mais

After two collapses, a third dam at ‘imminent risk of rupture’
  A dam holding back mining waste from a Brazilian miner is at risk of collapsing, a government audit says. The same company was responsible for two tailings dam collapses since 2015 that unleashed millions of gallons of toxic sludge and killed hundreds of people in Brazil’s southeastern state of Minas Gerais, which has been known worldwide as the Brumadinho Dam Collapse.   The retired Xingu dam at Alegria iron ore mine in Mariana — the same municipality where a tailings dam collapsed in November 2015 in what’s considered Brazil’s worst environmental disaster to date — is at “serious and imminent risk of rupture by liquefaction,” according to an audit report from a local state organ. The report says the Xingu dam “does not... Ver mais

Based on the text above, judge the following item.

It can be concluded from the text that the tailings dams which collapsed and killed many people were both located in the same state in Brazil. 

Based on the text above, judge the following item.

We can infer from the text that the dam which is at serious risk of collapsing is still working and may put its workers at risk too. 

Considering the ideas stated in the text and the vocabulary used in it, judge the following item. 

In the second sentence of the first paragraph, the word “Likely” means the same as Probably.

Can alternative tailings disposal become the norm in mining?
   There is no doubt that the resources extracted from mining are critical to our way of life. Likely, you’re reading this on your computer, smartphone, or tablet. Mining touches all our lives daily (in addition to metals used in electronics, think about that can of soda you are drinking, or the aggregate used to pave your driveway). The industry works hard to make sure the net impact is positive.    However, the waste associated with mining, both past and present, is an unavoidable result of conventional mineral processing. In the future it may be possible to extract metals like copper and gold without crushing and grinding the ore down to fine particle size and adding considerable quantities of liquid, resulting in convent... Ver mais

Can alternative tailings disposal become the norm in mining?
   There is no doubt that the resources extracted from mining are critical to our way of life. Likely, you’re reading this on your computer, smartphone, or tablet. Mining touches all our lives daily (in addition to metals used in electronics, think about that can of soda you are drinking, or the aggregate used to pave your driveway). The industry works hard to make sure the net impact is positive.    However, the waste associated with mining, both past and present, is an unavoidable result of conventional mineral processing. In the future it may be possible to extract metals like copper and gold without crushing and grinding the ore down to fine particle size and adding considerable quantities of liquid, resulting in convent... Ver mais

Considering the ideas stated in the text and the vocabulary used in it, judge the following item.

Nowadays, it is already possible to extract minerals without generating any waste at all.

    During a ransomware hack, attackers infiltrate a target’s computer system and encrypt its data. They then demand a payment before they will release the decryption key to free the ... Ver mais