What caused Earth to partially melt when being formed?

A) Impact of asteroids, comets, and debris
B) Gravitational compression
C) Accumulation of decaying radioactive elements
D) A combination of all of these choices


D

Environmental & Atmospheric Sciences

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Which of the following groups is most likely to disrupt local ecosystems as they search for natural resources and manufacturing sites?

A) governments B) transnational firms C) indigenous ethnic groups D) international organizations, such as the United Nations E) non-governmental organizations, such as Greenpeace

Environmental & Atmospheric Sciences

When does Earth's perihelion position, the point of orbit when it is closest to the Sun, occur?

A) During the Northern Hemisphere's spring. B) During the Northern Hemisphere's summer. C) During the Northern Hemisphere's winter. D) During the Northern Hemisphere's autumn.

Environmental & Atmospheric Sciences

________ are topographic "steps" on both sides of a river valley resulting from river entrenchment into its own floodplain

A) Entrenched meanders B) Oxbow lakes C) Nickpoints D) Levees E) Alluvial terraces

Environmental & Atmospheric Sciences

Describe the construction and problems of medium-range forecasts. Include discussion of ensemble forecasting and the role of chaos

What will be an ideal response?

Environmental & Atmospheric Sciences