Answer:
For any system closed to all transfers of matter and energy, the mass of the system must remain constant over time.
Explanation:
A.Near plate boundaries
This is accurate because as the plates move along the surface of the Earth the plates will separate causing earthquakes, this also can prove there are convergent boundaries the plates will collide causing volcanos. This is where mostly the action of plates passing, colliding, or even separating which cause movement creating mountains, earthquakes and volcanos.
Answer:
choosing one cereal over another and losing the chance to buy the other
Explanation:
Opportunity cost is the choice sacrificed for another alternative.
Our wants according to economics are unlimited. The resources to meet these unlimited wants are also scare. Production is limited by availability of resources.
Due to limited resources, we have to choose more important needs over the other. Often times, a scale of preference is drawn for our wants.
The cost of choosing one particular commodity over another is called the opportunity cost.
Lots of moss and spores grow here because of the damp shady environment explaining the ferns on the ground