Answer: The correct answer is option 3) The amount of matter within the system remains the same and 5) The cycle has a well-defined starting and stopping point.
A closed system can be defined as a system in which there is the only exchange of energy with the surrounding, while no exchange of matter takes place.
In a closed system, the cycle has a well-defined starting and stopping point.
Therefore, the two generalizations which can be made for cycles of matter in a closed system are option 1) and 5)
Answer:
1.a, 2.b, 3. c, 4. c, 5. c
Explanation:
1.
4H+O2→2H2O
2.
They must have two or more reactants.
3.
The reaction has more than one product.
4.
S + O2→SO2
5.
2Mg+O2→2MgO
Answer:
Provide Shelter and Provide Food
Explanation:
Plants provide fuel too but that fuel doesn't keep the ecosystem healthy in any way
Answer:
(B) it has a large root system to anchored the tree