Question 10(Multiple Choice Worth 2 points) In the table below, which statement would best fill the missing box under "Closed System"?
Open System
Closed System
Matter freely moves
Matter does not freely move
Energy freely moves
O Energy is unknown
O Energy is destroyed
Energy does not freely move
O Energy freely moves
ASAP PLEAS

Question 11 of 13 (1 point) jump to question: a stairway, ladder, or ramp must be present in excavations in which of the following situations? a. all trenches must have access/egress b. the trench is more than 15 feet wide but only 1 ½ feet deep c. the trench is more than 4 feet deep and the devices must be within 25 feet of all workers