Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 55, Problem 8TYU
Summary Introduction
Introduction: Fungicides are the chemical compounds. Fungicides have the antifungal properties and are used to kill the
Net ecosystem production or NEP is the difference between the gross primary production and the total respiration lost in an ecosystem.
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In the light of carbon cycle:
a) How we humans disturbed the carbon cycle?
b) What can we do so that these disturbances are not cause and they don’t affect the environment? Suggest at least three ways.
The practice of crop rotation uses nitrogen fixation to create fertile fields. First, a plant without a nitrogen-fixing relationship, such as corn, is planted. After the harvest, a nitrogen-fixing plant replaces the initial crop. Instead of harvesting the nitrogen-fixing plant, however, it is plowed under. The cycle continues in this manner. Why would nitrogen-fixing plants be plowed under instead of harvested?
a) To increases usable nitrogen in the soil.
b) To increase water retention.
c) Nitrogen-fixing plants are not a food crop.
d) To decrease bacteria in the soil.
27.
Cultural eutrophication is a natural process.
A) True
B) False
28.
In the carbon cycle _________________________.
A)
CO2 enters the ocean primarily by photosynthesis.
B)
photosynthesis always balances respiration.
C)
Carbon enters the food chain in the form of carbonic acid.
D)
CO2 in the ocean forms a weak acid.
Chapter 55 Solutions
Campbell Biology (10th Edition)
Ch. 55.1 - Why is the transfer of energy in an ecosystem...Ch. 55.1 - WHAT IF? You are studying nitrogen cycling on the...Ch. 55.1 - MAKE CONNECTIONS Use the second law of...Ch. 55.2 - Why is only a small portion of the solar energy...Ch. 55.2 - How can ecologists experimentally determine the...Ch. 55.2 - MAKE CONNECTIONS Explain how nitrogen and...Ch. 55.3 - If an insect that eats plant seeds containing 100...Ch. 55.3 - Prob. 2CCCh. 55.3 - Prob. 3CCCh. 55.4 - DRAW IT For each of the four biogeochemical...
Ch. 55.4 - Why does deforestation of a watershed increase the...Ch. 55.4 - WHAT IF? Why is nutrient availability in a...Ch. 55.5 - Prob. 1CCCh. 55.5 - Prob. 2CCCh. 55 - Considering the second law of thermodynamics,...Ch. 55 - Prob. 55.2CRCh. 55 - Why would runners hove a lower production...Ch. 55 - If decomposers usually grow faster and decompose...Ch. 55 - In preparing a site for surface mining and later...Ch. 55 - Which of the following organisms is incorrectly...Ch. 55 - Prob. 2TYUCh. 55 - The discipline that applies ecological principles...Ch. 55 - Level 2: Application/Analysis 4. Nitrifying...Ch. 55 - Which of the following has the greatest effect on...Ch. 55 - Prob. 6TYUCh. 55 - Which of the following would be considered an...Ch. 55 - Prob. 8TYUCh. 55 - Level 3: Synthesis/Evaluation 9. DRAW IT (a) Draw...Ch. 55 - Prob. 10TYUCh. 55 - Prob. 11TYUCh. 55 - WRITE ABOUT A THEME: ENERGY AND MATTER...Ch. 55 - Prob. 13TYU
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- In what ways do human activities influence the: a) Carbon Cycle? b) Nitrogen Cycle? SIMPLE ANSWER IF POSSIBLE PLS!arrow_forwardThe practice of crop rotation uses nitrogen fixation to create fertile fields. First, a plant without a nitrogen-fixing relationship, such as corn, is planted. After the harvest, a nitrogen-fixing plant replaces the initial crop. Instead of harvesting the nitrogen-fixing plant, however, it is plowed under. The cycle continues in this manner. Which of the following is not an abiotic factor that affects plants being used in crop rotation? a) NH3 availability b) Soil temperature c) Herbivore density d) Oxygen concentrationarrow_forward1. Question 1 is based on Figure 1 below. Sunlight co2 in the atmosphere Photosynthesis by producers Plant respiration Animal respiration Carbon fixation by consumers Fossils and fossil fuels Figure 1. Carbon cycle. a) Name the process in "a" and any TWO (2) of the organisms involved. b) Briefly explain how does the proses in "a" contribute to the carbon cycle. c) How does "b" affect the environment in a negative way?arrow_forward
- 2)The greastes effect that hmans have on the carbon cycle derives from A) the production of methane from domestic cattle B) all of these C) the production of CFCs D) runoff of fertilizers from agriclture E) the burning of fossil fuelsarrow_forwardOne of the lessons from a pyramid of production is that _____. A) eating grain-fed beef is an inefficient means of obtaining the energy trapped by photosynthesis B) the energy lost as heat or lost in cellular respiration is 10% of the available energy of each trophic level C) only one-half of the energy in one trophic level is passed on to the next level D) most of the energy from one trophic level is incorporated into the biomass of the next level E) production efficiency is highest for primary consumersarrow_forward23. Ecological stability is the result of _______________, the tendency of a system not to change when disturbed, and _________________, the ability of the system to recover. 24. Which of the following is NOT a limiting factor in primary production? Question 24 options: A) Red light B) Oxygen C) Micronutrients D) Waterarrow_forward
- The practice of crop rotation uses nitrogen fixation to create fertile fields. First, a plant without a nitrogen-fixing relationship, such as corn, is planted. After the harvest, a nitrogen-fixing plant replaces the initial crop. Instead of harvesting the nitrogen-fixing plant, however, it is plowed under. The cycle continues in this manner. Crop rotation would allow the farmer to reduce which of the following? a) Planting seeds. b) Watering the fields. c) The use of manufactured fertilizer. d) The burning of fossil fuels by farm equipment.arrow_forwardThe conversion of ammonia to nitrate, known as _______________, is a two-step process performed by soil bacteria. (a) nitrogen fixation (b) nitrification (c) assimilation (d) ammonification (e) denitrificationarrow_forwardTo generate biogas the required biomass resources must be on wet form, else biogas will not produce. How do you disagree or agree with this statement? Justify your answerarrow_forward
- Explain why you support or oppose greatly increasing the use of (a) genetically modified food production and (b) organic perennial polyculture.arrow_forwardIn shallow coastal ecosystems dominated by seagrasses, nutrients limit primary production under low nutrient (oligotrophic) condition while light becomes the limiting factor under high nutrient (eutrophic) condition. In the conceptual model given below, identify which group of primary producers (i.e. seagrasses, macroalgae, phytoplankton) corresponds to each of the line graphs by filling in the blank boxes. Explain your answer.arrow_forwardWhich of the following best describes how using fertilizer would affect the nitrogen cycle? The use of fertilizer would result in more nitrogen in the groundwater. The use of fertilizer would result in less nitrogen in the soil. The use of fertilizer would result in more phosphorus in the soil. The use of fertilizer would result in more nitrogen being added to the carbon cycle.arrow_forward
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