A, the earth system
The boundary would be the atmosphere, as energy cannot leave. No mass is shared between the rest of the universe and Earth
Sorry but I didn't get your question.
The pilgrims came over on it so, it's important because it brought people over.
1. Having a purpose; intentional: <span>a purposeful musician.</span><span>2. </span>Having or manifesting purpose; determined: <span>entered the room with a purposeful <span>look.</span></span>
