Question

written response question #2

there are two continents with an ocean between them. they have very different plants and animals on them now. however, dr. nascim found fossils of the same type of organism on both continents; this type of organism lived in the same place millions of years ago. dr. nascim is using the fossils as evidence to argue that these continents used to be touching. how could the continents have gotten so far apart, and about how long did it take for this to happen?

Explanation:

The continents could have drifted apart due to plate tectonics (continental drift theory). The movement of tectonic plates over millions of years caused the separation. The time taken for this to happen is typically on the order of tens to hundreds of millions of years. For example, the separation of the Americas from Europe and Africa (due to the opening of the Atlantic Ocean) took around 100 - 200 million years, driven by the movement of the North American, South American, Eurasian, and African plates as part of the process of seafloor spreading and continental drift.

Answer:

The continents could have drifted apart due to plate tectonics (continental drift). The process occurs as tectonic plates (carrying the continents) move slowly over the Earth's mantle. The time for this separation (e.g., Atlantic Ocean formation) typically takes tens to hundreds of millions of years (e.g., ~100–200 million years for the Americas to separate from Europe/Africa).