The Galactic Center or Galactic Centre is the rotational center of the Milky Way, it is a super massive black hole
Constants are factors that are not changed in the experiment. Since the experiment is testing different colors of light on plant growth, light color is being changed, and is therefore not a constant. Hope this helps! :)
Answer:
Plants absorb carbon dioxide, water and sunlight to make their own food, grow and release oxygen through photosynthesis. They're a huge part in keeping our air clean.
Explanation:
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Answer:
D. The nucleus regulates all cellular activity
Circulatory System because it carries the blood throughout the body.
