Flashcardizz EOG Review 8th Grade

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What is eutrophication?

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Eutrophication is the process by which water bodies become overly enriched with nutrients (like phosphates and nitrates), leading to excessive growth of algae and depletion of oxygen.

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What is radioactive dating?

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Radioactive dating is a method used by scientists to determine the age of rocks and fossils by measuring the decay of radioactive isotopes.

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What evidence supports the theory of evolution?

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Fossils found in older rock layers that are unlike any existing organisms provide strong evidence for evolution.

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How does biotechnology assist in agriculture?

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Biotechnology helps farmers by developing crops that are genetically modified to be resistant to adverse weather conditions.

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What are the environmental impacts of burning fossil fuels?

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Burning fossil fuels can produce smog, which contributes to air pollution and respiratory illnesses.

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What is the role of phosphates in aquatic ecosystems?

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Phosphates are nutrients that can promote algae growth in water bodies, but excessive levels can lead to harmful algal blooms.

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What is the significance of core samples in geology?

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Core samples provide valuable information about the Earth's history, including climate changes and geological events.

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What is the difference between relative dating and absolute dating?

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Relative dating determines the sequence of events, while absolute dating provides a specific age or date for rocks and fossils.

Front

What are the consequences of increased turbidity in water?

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Increased turbidity can reduce light penetration, affecting photosynthesis in aquatic plants and disrupting ecosystems.

Front

What is the greenhouse effect?

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The greenhouse effect is the warming of the Earth's surface due to the trapping of heat by greenhouse gases in the atmosphere.