Earth's continents and seafloors together form a thin outer layer of the planet called the

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The earth's continents and seafloors together form the thin outermost layer of the planet called the crust. Option A is incorrect as "strata" refers to layers within the crust rather than the crust itself. Option B refers to a hypothetical supercontinent that existed millions of years ago, but it is not an accurate answer choice for the present-day situation. Option D refers to the living organisms and their interactions with the environment, which is not related to the earth's structure.

Earth's Continents and Seafloors Together Form a Thin Outer Layer