Earth's Landscapes

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What are fossils?

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Fossils are the remains or traces of plants and animals that lived a long time ago, often found in rocks.

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What do fossils tell us about Earth's history?

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Fossils provide evidence of past life and help scientists understand how Earth and its environments have changed over time.

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What is radiocarbon dating?

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Radiocarbon dating is a scientific method used to determine the age of an object containing organic material by measuring the amount of carbon-14 it contains.

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What is the Grand Canyon?

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The Grand Canyon is a large canyon in Arizona, formed by the erosion of the Colorado River over millions of years.

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How do rivers shape landscapes?

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Rivers shape landscapes by eroding soil and rock, creating valleys, canyons, and deltas.

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What is silt?

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Silt is a fine soil that is carried by water and can settle in layers, often found in riverbeds and floodplains.

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What is the role of glaciers in shaping the Earth?

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Glaciers shape the Earth by carving out valleys and creating landforms as they move and melt.

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What evidence do fossils provide?

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Fossils provide evidence of past life, including the types of organisms that lived and the environments they lived in.

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What can scientists learn from studying sedimentary rocks?

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Scientists can learn about the history of Earth, including past climates, environments, and the types of organisms that existed.

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What is an ocean?

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An ocean is a large body of saltwater that covers most of the Earth's surface and is home to many forms of life.