Why Is It That the Most Ancient Rocks Are Found

question 29

Essay

Why is it that the most ancient rocks are found on the continents,and not on the ocean floor?

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Definitions:

Fovea

The fovea is a small depression in the retina of the eye where visual acuity is highest. It is densely packed with cones and is crucial for detailed vision.

Receptors

Proteins typically found on cell surfaces that bind to specific molecules, triggering a response in the cell.

Signaling Molecules

Chemicals released by cells that communicate and coordinate actions across the body or between organisms, crucial in many biological processes.

Histamine

A compound released by cells in response to injury and in allergic and inflammatory reactions, causing contraction of smooth muscle and dilation of capillaries.