How Do Scientists Determine the Age of Fossils

question 93

Multiple Choice

How do scientists determine the age of fossils?

• A)They only determine relative ages by assuming that deeper layers of sedimentary rock are older.
• B)They use radiometric dating to measure the age of the surrounding rocks.
• C)They cannot.

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Definitions:

Aldosterone

A steroid hormone produced by the adrenal glands that regulates sodium and potassium balance in the blood, influencing blood pressure and fluid balance.

Adrenal Cortex

The outer part of the adrenal gland that produces essential hormones like cortisol and aldosterone, which regulate metabolism, blood pressure, and stress response.

Hypotonic

Describes a solution that has a lower osmotic pressure than another fluid, often causing cells to swell as water moves into them.

Isotonic

Refers to a solution that has the same salt concentration as the cells and the blood of the body or to muscle movements where tension remains unchanged and the muscle's length changes.