Are you wearing the prescribed dry suit with helmet and gloves?
Brock checked his emotional scanner for a unfamiliar sensation. "Loneliness"
The pod master had said trees had been extinct for hundreds of years. Brock reached up and pulled off a leaf.
Brock found some thing lying under a tree and he realized it was a dog (Brog).
When Brock came back to the dome he brought Brog with him. The scientist saw Brog and put him in the lab for testing
Brog and Brock left the dome and they came to the stream. Brock took off his helmet and dry suit. Brock realized outside the dome wasn't poisonous. In the end Brock and Brog drank from the stream together.