Answer:
Affordable trains soon ruled the forte of long-distance travel. Jet services were introduced that could fly higher and faster. By the time the 2000s rolled around, commercial flights had transformed themselves into the primary option of travel. Now, each member of the family boasts of a car each for personal use.
Explanation:
Separate Layer it's part of the "Atmosphere layers"
A long, steep slop, especially one at the edge of a plateau or separating areas of land at different heights.
According to studies this is False.
There weren't any risks to exploring. FALSE
