C. Organ System
Like said in the definition above, an organ system is a group of organs working together to perform a specific function for the organism.
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Answer: B
Explanation:
the less trees the more carbon
The contractile vacuole expels excess fluid from the cell.
Well if you placed the g facing you , it would look upside-down under a microscope , but if you faved it facing the other direction it would look as if it was facing you (the correct way)
It should be true due to adaptations. when a bird doesn’t stay for winter weather so it adapts by migrating to the south during the cold weather
