svp j'arrive pas l'exercice 2 qlqn peut m'aider svp​

We are here for seven weeks now and did many experiments. Two days
ago, Scott managed to create soil and he planted vegetables. We were on
three exploration missions so far, but we didn’t find any living creatures
yet. Our last mission was three days ago. We took the rover and traveled
north of the landing site. The landscape is quite mountainous. We never saw such high mountains before. We didn’t find any source of water. So
far, we didn’t encounter any serious problems.