What Are Comets Made Of

question 7

Multiple Choice

What are comets made of?

• A) ice and some rock
• B) ice
• C) high magnesium and iron rocks
• D) nickel-iron
• E) close-packed hydrogen

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Definitions:

Chorionic Villus Sampling

A prenatal test where a sample of chorionic villi is taken from the placenta for genetic testing.

Amniocentesis

A medical procedure used in prenatal diagnosis, involving the extraction of a small amount of amniotic fluid to test for chromosomal abnormalities and infections.

CVS

Chorionic Villus Sampling, a prenatal test that involves taking a sample of the chorionic villi from the placenta to test for chromosomal abnormalities.

Spontaneous Abortion

A medical term for a miscarriage, referring to the natural loss of a pregnancy before the fetus can survive outside the womb, typically before 20 weeks of gestation.