The Internal Structure of Earth Is a

question 289

Multiple Choice

The internal structure of Earth is a

• A) core of solid rock extensively enriched in iron, surrounded by a solid mantle of pure rock.
• B) large, solid iron core surrounded by a thick, flexible mantle of rock.
• C) core of rock and iron, surrounded by a mantle of liquid hydrogen.
• D) large core of iron, partly solid and partly molten, surrounded by a thick, flexible mantle of rock.

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Definitions:

Aerial Spraying

The application of pesticides or other chemicals from aircraft to control pests and diseases in crops or to control mosquito populations.

Target Pests

Specific undesirable organisms that pest control measures aim to reduce or eliminate.

DDT

A synthetic pesticide historically used for mosquito control but was banned due to environmental and health concerns.

Persistent

Describes substances that remain in the environment for extended periods without breaking down, often leading to long-term pollution.