Ivy Hides a Rattle Under a Blanket to See If

question 46

Essay

Ivy hides a rattle under a blanket to see if baby Chase will try to lift the blanket and retrieve the rattle.Ivy is assessing _____.

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Definitions:

Permafrost

A layer of soil or rock, below the surface of the earth, that remains frozen for two or more consecutive years, found mostly in polar regions.

Permanently Frozen Ground

Ground that remains at or below 0°C (32°F) for at least two consecutive years, typically found in polar regions, known as permafrost.

Hadal Zone

The Hadal Zone refers to the deepest regions of the ocean, typically found in oceanic trenches, and ranges in depth from about 6,000 to 11,000 meters.

Benthic Environment

The ecological region at the lowest level of a body of water such as an ocean or a lake, including the sediment surface and some sub-surface layers.