A Lava Flow Radiometrically Dated at 300 Million Years Lies

question 141

Essay

A lava flow radiometrically dated at 300 million years lies just below sedimentary layer A and just above sedimentary layer B. What can be said of the ages of beds A and B?

---

Definitions:

Trophic Levels

The positions that organisms occupy in a food chain, which are determined by the number of energy-transfer steps to that level.

Energy Transfer

The movement of energy from one part of an ecosystem to another, typically through the process of eating and being eaten.

Carnivores

Organisms that primarily consume meat for nutrition, typically predators or scavengers, equipped with adaptations tailored for a diet of animal flesh.

Consumers

Organisms that obtain their energy by eating other organisms or organic matter instead of producing their own food, as in the case of plants.