Examlex
Which of the following scientists made highly accurate measurements that first disproved the theories of Ptolemy and Copernicus?
Independently
The condition or quality of being able to act, make decisions, or operate without direct aid or influence from others.
Elementary Grades
The educational levels encompassing early childhood education, typically from kindergarten through fifth or sixth grade.
Toddlerhood
The stage of human development that spans from about 1 to 3 years old, characterized by rapid growth in mobility, language, and cognitive skills.
Early Childhood
The developmental period that extends from the end of infancy to about 5 or 6 years of age, sometimes called the preschool years.
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