Allotropy
Explanation:
Allotropy is existence of a chemical element in two or more different states. When an element exists in more than one physical state, they are said to be allotropes.
Many different substances exhibits allotropy and it largely impacts their physical state.
Carbon has two main allotropes; graphite and diamond. Graphite is a soft substance and can easily be broken. Diamond is the hardest natural substance that is known.
- A sulfur with a glassy luster and another with a dull earthy luster signifies two sulfur allotropes.
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Answer:
Transcription factors
Explanation:
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D. Secondary online and layers of periderm
The Moon is thought to have come from the Earth. In 1975, the giant impact hypothesis was put forward. This suggests that the Earth was hit by a planet about the size of Mars around the time of the formation of the solar system approximately 4.5 billion years ago, and the impact caused part of the outer layer of the Earth to spin off and form what is now the Moon.
