Human Biology: Concepts and Current Issues
7th Edition
ISBN: 9780321821652
Author: Michael D. Johnson
Publisher: Benjamin Cummings
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Chapter 23, Problem 13TY
Summary Introduction
Introduction:
Plant growth requires several minerals and nutrients in adequate amounts. It is affected by the inadequate supply of minerals and nutrients. Macronutrients such as nitrogen, carbon, oxygen, and phosphorous plays a major role in plant growth.
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Plant growth is most likely to be limited by the available supply of usable: a. nitrogenb. carbonc. oxygend. phosphorus
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
1. Briefly describe how the following processes influence nutrient cycling?
a. Photosynthesis
b. Decomposition
c. Respiration
Chapter 23 Solutions
Human Biology: Concepts and Current Issues
Ch. 23 - Prob. 1QCCh. 23 - Prob. 2QCCh. 23 - What are the components of an ecosystem?Ch. 23 - Prob. 2CRCh. 23 - Describe what happens to a country as it undergoes...Ch. 23 - Define zero population growth and explain why it...Ch. 23 - Prob. 5CRCh. 23 - Prob. 6CRCh. 23 - Prob. 7CRCh. 23 - Explain why the water cycle is essential to all...
Ch. 23 - Discuss the importance of the carbon cycle.Ch. 23 - Discuss the phosphorus cycle and its importance.Ch. 23 -
1. Your college campus, including all the humans...Ch. 23 -
2. Which of the following will affect the biotic...Ch. 23 - A population is growing at a rate of 2% per year....Ch. 23 - Which of the following statements is false? a. The...Ch. 23 - The large intestine of humans is populated by a...Ch. 23 -
5. Which of the following characterizes mature...Ch. 23 - Which statement about the human fertility rate is...Ch. 23 -
6. _____ flow(s) one-way through ecosystems while...Ch. 23 - All of the following terms can appropriately...Ch. 23 -
8. A human maintaining a vegan diet (containing...Ch. 23 - All of the following processes are involved in the...Ch. 23 - Prob. 12TYCh. 23 - Prob. 13TYCh. 23 -
12. Which biogeochemical cycle does not include...Ch. 23 - Prob. 15TYCh. 23 - Given absolutely no environmental resistance, how...Ch. 23 - Prob. 2AWKCh. 23 - Prob. 4AWKCh. 23 - Prob. 5AWKCh. 23 - Prob. 6AWKCh. 23 - Prob. 7AWKCh. 23 - Least developed countries tend to be poorer than...
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- Which criteria helps determine which fertilizer to use.Group of answer choices a. Does it contain the needed nutrients? b. Does it readily release those nutrients? c. Expense d. Side effects e) All of the abovearrow_forwardWhich of the following statements is/are TRUE for nitrogen fixation? A. Process is performed by nitrifying soil bacteria. B. Performed by bacteria present in the roots of all plants. C. Reduction of N2 to NH3. D. Consumes a negligible amount of ATP.arrow_forward(a) Younger plant parts/materials decompose faster compared to older more lignified plant parts/materials; (b) Materials with narrow C:N ratio will decompose more easily compared to materials with wider C:N ratio. A. If statement A is true B. if statement B is true C. both statement A and B are true D. statement A nor B are truearrow_forward
- O:48)arrow_forward1. Using plants to clean up pollution 10. Intake of Nutrients in the soil 9. CO₂ in atmosphere 2. Plants that store pollutants in tissue Plant 7. Bacterial conversion 8. Plants cannot use 3. Required in large amounts 5. Weathering 4. Required in trace amounts make available for plants 6. Usable by plants Match the answers below with concepts 1 to 10 in the diagram • • Macronutrients Phosphorous Nitrogen fixation Hyperaccumulators Micronutrients • • N2 gas • • Carbon fixation • Nitrates • Phytoremediation • lon exchangearrow_forwardWhen a plant is deficient of a macronutrient, such as nitrogen, it would have students growth will not be able to complete its life cycle. A. true b. Falsearrow_forward
- (ii) Which one of the following is non- biodegradable? A. DDT B. Vegetable peel C. Cardboard D. Bark of treesarrow_forward1.) a.Name two biological processes involved in rapid carbon exchange: b.Name two geologic processes involved in long-term carbon exchange:arrow_forwardCamellia and azalea are plants that produce yellow leaves, which is considered an undesirable outcome, when they are grown on alkaline soil. Which of the statements below support the fact about camellia and azalea stated above? a. Loam soil is not advisable to be used in growing camellia and azalea because of its acidity. b. Camellia and azalea should not be planted in chalk soil. c. Camellia and azalea produced yellow leaves because they are planted in acidic soil. d. Camellia and azalea require chalk soil to counter the effect of the alkaline soil used.arrow_forward
- Nitrogen compounds differ from other minerals needed by plants because they Select one: O a. Are toxic to the plants O b. Can be lost from the soil O c. Can be absorbed by root hairs O d. Are held by cation exchange capacity in the soil O e. Can be provided by symbiotic bacteriaarrow_forward1. Construct a table comparing natural gas, coal, and oil according to (a) origin, (b) fuel value, (c) other uses, (d) chemical composition, (e) environmental effects, etc. 2. Make a report on biofuels currently being studied and used in the Philippines. 3.Make a presentation on the advantages and disadvantages of using biofuels as an alternative energy source in the Philippines.arrow_forwardFertile soil is one of the keys to good yield. (i) Explain the roles of clay and organic matter in contributing to soil fertility and cation exchange capacity (CEC). (ii) Name ONE (1) negative effect of low CEC and high CEC soils respectively. Suggest ways to improve low CEC and high CEC soils. (iii) Suggest ONE (1) suitable type of crops for high CEC soil, low CEC soil and loam soil respectively.arrow_forward
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