Biology: The Unity and Diversity o...

15th Edition

Cecie Starr + 3 others

ISBN: 9781337408332

Textbook Problem

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Most of Earth’s freshwater is ________.

a. in lakes and streams

b. in aquifers and soil

c. frozen as ice

d. in bodies of organisms

Summary Introduction

Concept introduction: Chemical and geologic processes move elements to, from, and among environmental reservoirs. Movement of Earth’s tectonic plates can uplift rocks, so that an area that was once seafloor becomes part of a landmass. On land, erosion breaks down rocks, allowing the elements in them to enter rivers, and flow of seas. There are three environmental reservoirs that hold the most water. These reservoirs are through the atmosphere, onto land, then back to the ocean.

Explanation

Reasons for the correct statement:

There is limited freshwater present on Earth’s surface. The amount of freshwater available to meet human needs and sustain land ecosystem is severely limited. The vast majority of Earth’s water is 97 percent, which covers sea water and most freshwater is present in the form of ice. The amount of water in the frozen form as ice is about 69% of total freshwater.

Option c. is given as “frozen as ice”.

Mostly, the Earth’s freshwater is present in the frozen form as ice. Hence, option c. is correct.

Reasons for the incorrect statements:

Option a. is given as “in lakes and streams”...

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Biology: The Unity and Diversity o...

Solutions

Biology: The Unity and Diversity o...

Most of Earth’s freshwater is ________. a. in lakes and streams b. in aquifers and soil c. frozen as ice d. in bodies of organisms

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Biology Biology: The Unity and Diversity of Life (MindTap Course List)15th Edition

Most of Earth’s freshwater is ________.

a. in lakes and streams

b. in aquifers and soil

c. frozen as ice

d. in bodies of organisms