Question

Select all the correct answers.

Which two generalizations can be made based on what you know about cycles of matter in a closed system?
New matter is added, and old matter is destroyed.
Matter changes its physical form, allowing it to return to its original state.
The amount of matter within the system remains the same.
Matter and energy can cross the boundaries of the system.
The cycle has a well-defined starting and stopping point.

Answer 1

It's The amount of matter within the system remains the same and The cycle has a well-defined starting and stopping point.

Step-by-step explanation:

Answer 2

Answer: Plato users the correct answer is C but not E

Explanation: I just took the test. Hope you do better than I did in finding the correct second answer