The following table describes four different systems.

system description
food web both matter and energy are exchanged with other systems.
carbon cycle energy is exchanged with other systems, but the amount of carbon remains constant.
water cycle the amount of water remains constant, but energy is exchanges with other systems.
universe the amount of matter and energy remain constant.

which is an example of an open system?

The movement of tectonic plates in two different locations is shown below: two blocks labeled location a and location b are shown. at location a the top layer of the block shows two horizontal arrows pointing towards each other. small dunes are shown in the middle between the two arrows. the block labeled b has a vertical line in the middle. on the left of the line there is an arrow pointing down. on the right of the vertical line there is an arrow pointing up which statement is most likely true? subduction may occur in both locations. earthquakes may occur in both locations. subduction may occur in location a only and a volcanic eruption may occur in location b only. an earthquake may occur in location a only and a volcanic eruption may occur in location b only.

What would happen to the nutrients in an ecosystem if decomposers, such as bacteria, didn’t exist there?

What organelle other than the nucleus houses dna in a eukaryotic cell?