Why is it important for a system of objects to be isolated in order for the law of conservation of energy to apply?
A. The energy of each object in the system must not change.
B. The system must not exchange energy with other systems.
C. Energy must be able to freely move in and out of the system.
D. The type of energy that each object in the system has must always remain the same.

In order of decreasing light-transmitting capabilities of materials, which is the correct sequence? a. transparent -> translucent -> opaque b. opaque -> transparent -> translucent c. opaque -> translucent -> transparent d. translucent -> transparent -> opaque

Which component of the earth’s atmosphere is decreased due to photosynthesis?

Aproduction line at v. j. sugumaran's machine shop has three stations. the first station can process a unit in 7 minutes. the second station has two identical machines, each of which can process a unit in 16 minutes (each unit only needs to be processed on one of the two machines). the third station can process a unit in 10 minutes. ▼ is the bottleneck station, with a bottleneck time of nothing minutes per unit (enter your response as a whole number).