Which of the Following Is Essential for Birds to Maintain

question 47

Multiple Choice

Which of the following is essential for birds to maintain their high metabolic rate?

• A) Skin that is used as a respiratory structure
• B) Hollow bones, which decrease body mass
• C) Embryonic development in a shelled amniotic egg
• D) A four- chambered heart, which maximizes oxygen delivery
• E) Extraordinary coordination by a well- developed nervous system

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Definitions:

Mg

An abbreviation for magnesium, a chemical element vital for human health, involved in over 300 biochemical reactions in the body.

Scored Tablets

Medication in pill form with a line (or score) that allows for easy and accurate splitting.

Liter

A metric unit of volume equal to one cubic decimeter or 1,000 cubic centimeters, commonly used to measure liquids.

Basic Unit

The smallest, fundamental component or building block of a system or structure.