The Age of the Solar System Is Estimated to Be

question 30

Multiple Choice

The age of the solar system is estimated to be approximately 4.6 billion years based on which of the following types of data?

• A) samples of proto-solar nebula
• B) samples of the solar wind
• C) crater counts on Earth
• D) isotope ratios in meteorites

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Definitions:

Medication

Substances used to treat and manage illnesses, alleviate symptoms, or modify chemical processes in the body for therapeutic purposes.

Tuberculosis

Tuberculosis is a contagious bacterial infection that primarily affects the lungs but can spread to other parts of the body.

Hypertension

A characteristically high level of resting blood pressure (defined as a systolic blood pressure/diastolic blood pressure reading of more than 140/80 under precisely defined conditions). Can result from any of a variety of causes, but in about 90 percent of cases it is “essential,” meaning a simple cause cannot be identified. Hypertension is a risk factor for death due to cardiovascular disease.

Cancer

A broad term for a large group of diseases characterized by the uncontrolled growth and spread of abnormal cells in the body.