2nd Edition

ISBN: 9781947172517

Author: Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher: OpenStax

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Textbook Question

Chapter 31, Problem 2VCQ

Figure 31.7 Which horizon is considered the topsoil, and which is considered the subsoil?

Chapter 31, Problem 2VCQ, Figure 31.7 Which horizon is considered the topsoil, and which is considered the subsoil?

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Chapter 31, Problem 1VCQ

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How can soil erosion lead to desertification? It reduces the level of organic matter It promotes flooding that destroys vegetation It promotes salinization that destroys soil structure Which of the following is not a factor that may lead to urban sprawl? Pollution Immigration Overpopulation Which statement is NOT true about soil salinization? Soil dehydrates due to decrease in accumulation of water underground. Starts by attempting to wash the salts out of the topsoil by pumping more water. Results to the damage and killing of plants as saline water surrounds its deep roots. Which would most likely happen if too much nutrient entered a freshwater ecosystem? Algae will decrease, leaving few food resources, for fish. Nutrients would sink to the bottom, increasing soil deposition. Algae breakdown lowers dissolved oxygen, causing fish to suffocate.

Indicate whether the following statements about topsoil are TRUE or FALSE. Group of answer choices Topsoil is made up of both living and non-living components [ Choose ] FALSE TRUE Modern industrialized agriculture has greatly reduced the loss of topsoil from erosion [ Choose ] FALSE TRUE Topsoil represents the soil horizon that provides the most nutrients for plants [ Choose ] FALSE TRUE Loss of topsoil contributes to climate change due to release of more carbon dioxide into the atmosphere [ Choose ] FALSE TRUE A healthy ecosystem such as a forest or meadow actually requires the processes of soil removal by wind, water, etc. to be higher than the rate of soil renewal by uplift and weathering of rock [ Choose ] FALSE TRUE

Which soil horizon will contains the highest proportion of soil organism

Chapter 31 Solutions

Biology 2e

Ch. 31 - Figure 31.6 Soil compaction can result when soil...Ch. 31 - Figure 31.7 Which horizon is considered the...Ch. 31 - Figure 31.10 Farmers often rotate corn (a cereal...Ch. 31 - For an element to be regarded as essential, all of...Ch. 31 - The nutrient that is part of carbohydrates,...Ch. 31 - Most ____ are necessary for enzyme function....Ch. 31 - What is the main water source for land plants?...Ch. 31 - Which factors affect soil quality? chemical...Ch. 31 - Soil particles that are 0.1 to 2 mm in diameter...Ch. 31 - A soil consists of layers called that taken...

Ch. 31 - What is the term used to describe the solid rock...Ch. 31 - Which process produces an inorganic compound that...Ch. 31 - Through mycorrhization, a plant obtains important...Ch. 31 - What term describes a plant that requires...Ch. 31 - What is the term for the symbiotic association...Ch. 31 - What type of plant problems result from nitrogen...Ch. 31 - Research the life of Jan Babtista van Helmont What...Ch. 31 - List two essential macronutrients and two...Ch. 31 - Describe the main differences between a mineral...Ch. 31 - Name and briefly explain the factors that affect...Ch. 31 - Describe how topography influences the...Ch. 31 - Why is biological nitrogen fixation an...Ch. 31 - What is the main difference, from an energy point...Ch. 31 - Why is a root nodule a nutritional adaptation of a...

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