Answer: magnesium atom
Explanation:
magnesium atom
The chlorophyll molecule consists of a central magnesium atom surrounded by a nitrogen-containing structure called a porphyrin ring; attached to the ring is a long carbon–hydrogen side chain, known as a phytol chain.
Answer
CORRECT ANSWER ► B
B- A periodic warming sea surface temperatures
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Answer:the big birds survived
Work is done on an object only if the force and displacement are in the same direction.
