Mankind has to find alternative living spaces

Do I think the Earth will become ..............? Well, the question is not if, but when.

• vacant

• empty

• overcrowded

• comfortable

We have almost ............. our natural resources, destroyed the air and oceans, and in the past century, pollution has caused so many problems that are hard to tackle.

• exhausted

• conserved
• preserved
• replenished

The main ............... we face now are overpopulation, malnutrition, global warming, pandemics and wars, though not in that order.

• challenges
• wins

• benefits
• solutions

The main reason is that mankind has become a burden for this planet, so I think it is ................ to start looking for another place to live. My suggestion would be another planet.

• illogical
• inevitable

• unreasonable
• impractical

However, in our solar system, there is no other place we can go, and the nearest ................ planet is many light-years away.

• desert

• barren

• habitable

• distant

Basically, it would be like saving our .................. and some others as it was in the case of Noah in the Bible. Instead of the Ark, we would build huge space vessels that would be able to carry our representatives long distances.

• species
• cars
• furniture
• books

Am I certain that there is no other way? Honestly, I have doubts. I have even thought of ................ . We all know that the majority of the world's population lives only in a tiny part of the planet.

• alternatives

• elections

• differences

• selections

There are still a number of places that are not inhabited. Think of the .............. steppes of Russia, or the American prairies.

• vast

• finite

• tiny

• bounded

What about food then? Good question. However, I believe that we have to find alternatives to ............ for the food that we have now.

• substitute

• genuine

• keep

• continue

In my opinion, the only solution to this problem can be to use ............... food. I’m aware that a lot of people are against it, but it has a very successful track record of solving some problems in population that were literally starving to death.

• genetically modified

• intrinsically fitted

• natively altered

• naturally mutated