There is a view that 
people
 should invest more in searching for other livable planets because it looks like living on Use synonyms
Earth
 is increasingly challenging. Use synonyms
This
 essay will explain why I disagree with Linking Words
this
 view via a discussion of the feasibility of continuing to stay on Linking Words
Earth
 and the challenges of multi-planet travel.
To start with, it is not certain that life on Use synonyms
Earth
 would be more difficult. The reason for Use synonyms
this
 is there are still a lot of resources, Linking Words
although
 they are depleting, and humans still do not utilize all the land. Linking Words
Therefore
, it would take quite a long time before the need to relocate to another planet becomes obvious. Linking Words
Furthermore
, Linking Words
people
 are aware of the decline of resources and are focusing efforts on recycling. Use synonyms
For example
, there are many campaigns promoting saving water and stopping wasting food. Industrial companies Linking Words
also
 start using renewable energy sources, Linking Words
such
 as wind and solar power.
Linking Words
Secondly
, travelling from one planet to another is not easy or straightforward. Linking Words
This
 is because, currently, Linking Words
people
 do not have enough technological advancements to make Use synonyms
this
 kind of expedition efficient. Linking Words
For instance
, a journey from the Linking Words
Earth
 to the Mar takes around seven months and is carried out by machines and robots only. If Use synonyms
people
 were involved in Use synonyms
this
 journey, scientists would need to sort out many related problems, Linking Words
such
 as storing food for a long time and keeping humans in good shape in space. Linking Words
Moreover
, researching these technologies Linking Words
also
 poses an enormous financial burden, for which the world is not quite ready, given many urgent social issues that need to be looked after.
In conclusion, I believe that it is possible to have life on Linking Words
Earth
 sustainably by employing green power sources as well as reducing waste. Use synonyms
Also
, because space travel is costly and complicated, Linking Words
people
 should spend their money prudently.Use synonyms