Life: The Science of Biology
11th Edition
ISBN: 9781319010164
Author: David E. Sadava, David M. Hillis, H. Craig Heller, Sally D. Hacker
Publisher: W. H. Freeman
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Chapter 35.3, Problem 1R
Summary Introduction
To review:
The changes that may occur if a land is suddenly irrigated heavily after being dry for many years and the result of cutting down a deciduous forest and replacing it with crops that have to be harvested every year.
Introduction:
Soil is a medium, in which plants grow and various living organisms thrive. The quality of the soil is dependent on environmental factors. Soil degradation has serious impacts on the ecosystem as plant growth depends on the soil quality. If the flora dies, the fauna in that area, in consequence, will die too.
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Check out a sample textbook solutionStudents have asked these similar questions
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.
Why are total soil concentrations poor indicators of the amounts of ions that
may bioaccumulate (enter the food chain)?
For which of the following problems would growing and maintaining cover crops be an appropriate solution?
Erosion is thinning the soil on a farm.
The organic matter and nutrients in the soil on a farm are being depleted.
The soil on a farm is becoming arid due to decreased water-carrying capacity.
a
I and II only
b
I and III only
c
II and III only
d
I, II, and III
Chapter 35 Solutions
Life: The Science of Biology
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- Drought is the main constraint for agriculture sector. What is the major consequence of water insufficiency in plant? *arrow_forwardWhy do tropical and temperate soils have different rates of nutrient regeneration?arrow_forwardCompared to traditional tillage, conservation tillage reduces topsoil erosion accelerates water loss from the soil causes soil compaction does not require herbicides reduces the amount of carbon stored in the groundarrow_forward
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- Farming is often done on the large-scale to allow for high-volume production. For example, tomatoes can be grown in large open fields and harvested by machinery instead of by hand. The harvester machine not only collects (nearly) all the tomatoes, it also removes the green unripe fruits! Harvesters like this one greatly reduce the time needed to obtain crops but challenges remain. What is one biotic factor that could limit the tomato yield? List and briefly explain how this factor causes a yield decrease What is one strategy you could use to try and reduce losses from this biotic factor?arrow_forwardAs a rule of thumb, each 1% of soil organic matter by weight contains about 1,000 pounds of nitrogen in the plow layer. For a plow layer with 2% soil organic matter, one can expect the amount of N to be mineralized per growing season to equal about: over 120 pounds less than 10 pounds 15 pounds 120 pounds 40 poundsarrow_forwardSoil pH influence the availability of soil nutrient elements TRUE OR FALSEarrow_forward
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