The__________ Is Thought to Be a Liquid, Metallic Region in the Earth's

question 23

Multiple Choice

The__________ is thought to be a liquid, metallic region in the Earth's interior.

• A)outer core
• B)mantle
• C)inner core
• D)lithosphere

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Definitions:

Alveoli

Tiny air sacs in the lungs where gas exchange between the air and blood takes place.

Cohesive Forces

Attractive forces between similar molecules that hold a substance together, such as the attraction between water molecules.

Surface Tension

The elastic tendency of a fluid surface which makes it acquire the least surface area possible, acting like a stretched elastic membrane.

Tracheal Tubes

Tubes that make up part of the respiratory system in insects, allowing gas exchange directly with body cells.