Answer:
Many scientists favor the RNA world hypothesis, in which RNA, not DNA, was the first genetic molecule of life on Earth. Other ideas include the pre-RNA world hypothesis and the metabolism-first hypothesis. Organic compounds could have been delivered to early Earth by meteorites and other celestial objects
True millions of different species live on coral reefs
Answer:
True
Explanation:
crystallisation- liquids cool to a solid-state to form crystals.
