Find the sentence with Passive Voice, write what tense it is, and transform it into Active Voice.
Coronavirus has become a serious problem for people all over the world. It appeared in China and quickly spread to other countries. This disease is similar to the flu. Symptoms of coronavirus are coughing and fever. Young people usually experience a mild form of the disease. However, coronavirus is a serious danger for the elderly and people suffering from diabetes. Various measures are being taken to prevent the spread of coronavirus: mass events are being canceled, many employees work from home, and many schoolchildren switch to distant learning. A lot of people are quarantined. Some countries even temporarily closed their borders. Unfortunately, measures against the coronavirus cause great harm to the world economy. Many companies suffer heavy losses and may even go bankrupt. This will inevitably affect the income of the population. Of course, it is difficult to calculate all the consequences. For now, we can only follow the situation and wash our hands more often.

1. If number of speakers decrease, some languages will be endangered.
2. If Internet reaches all corners of the world, English as the Net language will influence the culture of non-speaking countries.
3. If English keeps on being global, other languages won’t set foot on Internet. 4. The world’s linguistic experts will be alarmed if many languages disappear at an alarming rate.
5. If some tribes aren’t urbanized and assimilated into mainstream, their languages won’t die out.
6. Youngsters will be able to communicate with people from abroad, if they learn foreign languages.
7. If the EU wasn’t worried about endangered languages, they wouldn’t issue a special directive on preserving them.
8. If minority languages aren’t politically tolerated, they will be in jeopardy.
9. If the high number of languages spoken in the EU corridors, it would be like a Tower of Babel.
10. If English is the language of trade and diplomacy, it will be considered as lingua franca nowadays. 

Озеро Байкал - самое величайшее на планете. Оно неразрывно связано с Россией и оно из всего того, что характеризует ее. Располагается рядом с центром Азии, озеро Байкал известно далеко за континентом. Байкал - самое глубокое озеро на Земле. Его максимальная глубина - 1,620 метра. Озеро, чье копирование бедственных ситуаций разрушилось (не понимаю, что вы имели в виду), но не с безлимитными ресурсами озера Байкал, если ничего не сделать, рано или поздно они закончатся. Сейчас жизнь озера Байкала занесена в Юнеско список наследия, есть в опасности, и оно возможно сейчас после множества лет, нашими потомками, становится на поверхность воды, они видят ничего в этом ожидании мертвом отражении человеческой глупости.

Все переведено дословно, как и просили.