Which of the Following Was Used by Some Astronomers in the Early

question 19

Multiple Choice

Which of the following was used by some astronomers in the early 1900s to argue that spiral nebulae were nearby objects?

• A)Their large parallaxes
• B)Measurements taken several years apart that showed rotation
• C)Their small Doppler shifts
• D)An absence of globular clusters in spiral nebulae

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Definitions:

Birth Canal

The passage comprising the cervix, vagina, and vulva through which a fetus passes during childbirth.

Uterus

A major female reproductive organ in many mammals, including humans, that hosts and nourishes the fertilized egg during pregnancy.

Neonates

Newborn babies, especially within the first month after birth.

Zygotes

The initial cell formed when a sperm cell fertilizes an egg cell, marking the beginning of human development.