Answer:
20.243 s
Explanation:
Because the escalator and person moving in the same direction, relative velocity can be calculated by summing the velocity of the escalator and velocity of the person.
The speed of escalator can be calculated as,

Relative velocity
Therefore total time required to take the person to get to the top

Earth rotates about this axis once each day (approximately 24 hours)
and revolves around the sun every year ..
Hope this helped ! :)
What figure??? please show a photo or something so i can help
Biome is an open system because energy and matter are constantly being transferred in and out.
i hope this helped you..
:)
Answer:
potential energy or stored energy
Explanation: