Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 44, Problem 4RQ
Which of the following is a biotic factor?
- wind
- disease-causing microbe
- temperature
- soil particle size
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GİRTEN K
Which of the following is not true for Soil Organic Matter (SOM)?
O It can be degraded by microbes
OIt holds water for plants
It is integral to maintaining the soil structure
OIt makes up a large proportion of soil structure
OIt is important for retaining nutrients in the soil
As 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 pounds
An extremely acid soil generally limits the availability of many nutrients in the soil.
True or False
Chapter 44 Solutions
Biology 2e
Ch. 44 - Figure 44.10 How might turnover in tropical lakes...Ch. 44 - Figure 44.12 Which of the following statements...Ch. 44 - Figure 44.21 In which of the following regions...Ch. 44 - Which of the following is a biotic factor? wind...Ch. 44 - The study of nutrient cycling though the...Ch. 44 - Understory plants in a temperate forest have...Ch. 44 - An ecologist hiking up a mountain may notice...Ch. 44 - Which of the following biomes is characterized by...Ch. 44 - Which of the following biomes is characterized by...Ch. 44 - Where would you expect to find the most...
Ch. 44 - A key feature of estuaries is: low light...Ch. 44 - Which of the following is an example of a weather...Ch. 44 - Which of the following natural forces is...Ch. 44 - Ecologists often collaborate with other...Ch. 44 - The population is an important unit in ecology as...Ch. 44 - Compare and contrast ocean upwelling and spring...Ch. 44 - Many endemic species are found in areas that are...Ch. 44 - The extremely low precipitation of subtropical...Ch. 44 - In what ways are the subtropical desert and the...Ch. 44 - Scientists have discovered the bodies of humans...Ch. 44 - Describe the conditions and challenges facing...Ch. 44 - Compare and contrast how natural- and human...Ch. 44 - Predict possible consequences if carbon emissions...
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- Human Activity Effects on Soil Quality Effects on Soil Quantityarrow_forwardHydroponics is: The process of altering new organisms to create new products. Natural or manufactured substances used in the place of food. The use of nutritious liquid rather than soil to grow plant roots All of the above statementsarrow_forwardGenerally, the primary factor influencing soil organism populations is: O predation and competition amount and quality of food moisture and temperature chemical characteristics of the soilarrow_forward
- Which of the following statements is NOT as description of soil? A. Varying nutritional content. B. Phototropic microbes are found only on the top few centimeters. C. A homogenous layer of organic and inorganic material. D. The area around the plant soil usually has the highest microbial populations.arrow_forwardFor 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 IIIarrow_forwardDescribe soil as a microbial habitat.arrow_forward
- Compared 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_forwardA contaminated field has been seeded with plants that you are told have the ability to absorb toxic metals from the soil. This is an example of a chemical method physical method bioremediation measure gasification approach phytoremediation approacharrow_forwardRefer to the image: Discuss the succession of decomposers in your setups and explain the role of decomposers in the degradation of plant material. *The decomposing material is only the scraps of the plants, soil is not added.*arrow_forward
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