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While researching a topic, a student has taken the following notes:
• A supercontinent is a single landmass made up of most or all of Earth's continents.
• Over time, continents merge together to form supercontinents, which then break apart.
• This process is believed to take hundreds of millions of years and is known as the supercontinent cycle.
• Ur and Columbia were supercontinents.
• Ur formed about 3.1 billion years ago.
• Columbia formed about 1.8 billion years ago.
• A supercontinent is a single landmass made up of most or all of Earth's continents.
• Over time, continents merge together to form supercontinents, which then break apart.
• This process is believed to take hundreds of millions of years and is known as the supercontinent cycle.
• Ur and Columbia were supercontinents.
• Ur formed about 3.1 billion years ago.
• Columbia formed about 1.8 billion years ago.