Alright, so mass is a property of a physical body. During physical changes, such as acceleration, force, etc, the mass stays the same since we are not affecting its physical shape, just where it is physics wise. So yeah mass is conserved during a physical change.
(This is very confusing I'm bad at explaining things sorry)
Answer:
B
Explanation:
It removes other waste from our body and keeps our blood clean
The plant produces sperm cells and egg cells
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It is an organic catalyst. It speeds up certain chemical reactions in the body.
