What evidence tells us that Earth has a distinct concentration of high-density material near the center and does not gradually transition from low-density to high-density rock?

What will be an ideal response?


The wobble of Earth's rotation axis is consistent with a distinct concentration of high-density material near the center.

Environmental & Atmospheric Sciences

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For the purpose of gathering comparable data, the United Nations has imposed a precise definition of the meaning of urban upon the world's states

Indicate whether this statement is true or false.

Environmental & Atmospheric Sciences

What is plankton?

a. Any photosynthetic organism b. An internal organism c. A drifting organism d. Microscopic organism

Environmental & Atmospheric Sciences

Imagine a profile of soil going to a depth of approximately 10 ft. On a sunny day, the soil at a depth of 5ft will be ________ the soil at the surface because ________

A) warmer; soil is a good conductor of heat B) cooler; plate movement mixes the soils and dissipates the heat C) warmer; geothermal processes heat the deeper soils D) cooler; land is opaque preventing heating at depths E) cooler; convective heating will warm the subsurface more than the surface

Environmental & Atmospheric Sciences

About half of urban sprawl is due to ________

A) highway/road expansion B) less people living in cities C) an increase in urban population D) residential development E) increased per capita land use in urban areas

Environmental & Atmospheric Sciences