_____ and Silicon Are the Two Most Common Elements in Earth's

question 30

Short Answer

_____ and silicon are the two most common elements in Earth's crust.

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Definitions:

Pregnancy

A term for the period during which a woman carries a developing fetus inside her uterus, typically lasting around 40 weeks from the last menstrual period.

Small Head

Generally refers to a medical condition where the circumference of the head is significantly smaller than typical for an individual's age and sex, known as microcephaly.

Heart Defects

Abnormalities in the heart's structure that are present at birth and can affect how the heart works.

Mental Development

The psychological progression of cognitive, emotional, and social abilities and skills over the course of an individual's life.