What Is Not a Main Source of Evidence for the Existence

question 34

Multiple Choice

What is not a main source of evidence for the existence of dark matter?

• A)massive blue stars
• B)rotation curves of disk galaxies
• C)stellar motions in elliptical galaxies
• D)velocities and positions of galaxies in clusters of galaxies
• E)gravitational lensing by clusters of galaxies

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Definitions:

Uncollectible Accounts Expense

An expense recorded by businesses to account for receivables that are considered irrecoverable, indicating customers are unlikely to pay their debts.

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Documents that provide detailed information about a sale transaction, including the date of sale, items sold, and amounts charged.

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