In a Young Fetus, the Head's Length Is About Equal

question 192

Multiple Choice

In a young fetus, the head's length is about equal to the rest of the body's length. This illustrates the

• A)plasticity principle.
• B)catch-up growth principle.
• C)proximodistal developmental trend.
• D)cephalocaudal developmental trend.

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Definitions:

Fossil Fuels

Non-renewable energy sources formed from the remnants of ancient plants and animals, including coal, oil, and natural gas.

Biogeochemical Cycles

Processes that recycle essential elements and compounds between the biological (living) and geochemical (non-living) components of the Earth.

Stable Ecosystems

Ecosystems that remain relatively constant in terms of their species composition, structure, and function despite disturbances.

Greenhouse Effect

The trapping of the sun's warmth in the planet's lower atmosphere due to the greater transparency of the atmosphere to visible radiation from the sun than to infrared radiation emitted from the planet's surface.