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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332

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Chapter
Section
BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
Chapter 21, Problem 14SQ
Textbook Problem
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Match each material with its most suitable description.

____ limestone a. extracted from kelps
____ chert b. a dried red alga
____ alginates c. rocky radiolarian remains
____ nori d. extracted from red algae
____ carrageenan e. remains of foraminifera

Summary Introduction

To match: The material with its most suitable description.

Explanation of Solution

Limestone - e. remains of foraminifera

Remains of foraminifera that lived and died in the oceans for more than 500 million years ago have fallen into the sea floor. The geologic processes have transformed the accumulations of foraminiferal shells into chalk and limestone. They are calcium carbonate–rich sedimentary rock.

Chert - c. rocky radiolarian

Geological processes have transformed the remains of radiolarian shells into a rock called chert. It is a sedimentary rock that consists of microcrystalline or cryptocrystalline, which is the mineral form of silicon dioxide.

Alginates - a. extracted from kelps

Kelps are the sources of alginates...

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