Explanation:
The Phanerozoic eon is separated into three eras: the Paleozoic, Mesozoic, and Cenozoic eras
Oxygen causes the chemical weathering of a rock containing iron to become soft and crumbly and reddish brown in color.
<h3>What is the role of oxygen in rock weathering?</h3>
Oxygen is said to be a very reactive element and this often makes it reacts with rocks and this often leads to rust formation and others.
Therefore, Oxygen causes the chemical weathering of a rock containing iron to become soft and crumbly and reddish brown in color.
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The office administrator has the responsibility of making sure all office activities run smoothly and efficiently
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Answer:
Option A. is correct
Explanation:
Given:
A sediment core is removed from the floor of an inland sea. The sea has been in existence, off and on, throughout the entire time that terrestrial life has existed. Researchers wish to locate and study the terrestrial organisms fossilized in this core. The core is illustrated as a vertical column, with the top of the column representing the most recent strata and the bottom representing the time when the land was first colonized by life.
Solution:
A sediment core refers to a mud collected by the scientists from the bottom of lakes to interpret past ecosystems.
To assign absolute dates to fossils in this sediment core, it would be most helpful if volcanic ash layers were regularly interspersed between the sedimentary strata.
