Question

classify which sentences from the passage describe a problem and which ones describe a solution
solution problem
sentences problem/solution
as with mercury and gemini space garments, apollo suits had to serve as a backup pressure system to the space capsule.
furthermore, when walking on the moon, apollo astronauts needed the flexibility to roam freely without dragging a cumbersome combination oxygen line and tether.
the garment, similar to long johns but laced with a network of thin walled plastic tubing, circulated cooling water around the astronaut to prevent overheating.
on top of the pressure layer were five layers of aluminized mylar for heat protection, mixed with four spacing layers of non-woven dacron

Explanation:

1. The first sentence states a requirement for Apollo suits to act as a backup pressure system, which is a problem/constraint that needed addressing.
2. The second sentence outlines a need for unrestricted movement without cumbersome equipment, which is a problem/requirement for the suit design.
3. The third sentence describes a garment with cooling tubing to stop overheating, which is a solution to the problem of astronaut overheating.
4. The fourth sentence describes layered materials for heat protection, which is a solution to thermal challenges of space/Moon conditions.

Answer:

Sentences	Problem/Solution
Furthermore, when walking on the Moon, Apollo astronauts needed the flexibility to roam freely without dragging a cumbersome combination oxygen line and tether.	Problem
The garment, similar to long johns but laced with a network of thin walled plastic tubing, circulated cooling water around the astronaut to prevent overheating.	Solution
On top of the pressure layer were five layers of aluminized Mylar for heat protection, mixed with four spacing layers of non-woven Dacron.	Solution