One Adaptation to Flight in Birds Is Lighter Bones,which Lack

question 19

Multiple Choice

One adaptation to flight in birds is lighter bones,which lack

• A)calcium.
• B)collagen.
• C)bone marrow.
• D)the periosteum.
• E)medullary cavities.

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Definitions:

Time-series Data

Data points collected or recorded at successive times, often with equal intervals between them.

Cross-sectional Data

A type of data collected by observing many subjects at the same point of time or without regard to differences in time.

Synchronous Data

Data that is collected or updated at the same time across the system or in a coordinated manner.

Cross-sectional Data

Data collected from a population at a specific point in time, used to observe variations among subjects.