BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Textbook Question
Chapter 42, Problem 4SA
Primary productivity on land is affected by _______.
| a. nutrient availability | c. temperature |
| b. amount of sunlight | d. all of the above |
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Desertification typically happens becausea. deserts naturally expand in size.b. humans allow overgrazing.c. desert animals wander into adjacent areas for food.d. humans tap into limited water supplies for their water needs in the nearby desert.
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Chapter 42 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 42 - In most ecosystems, producers use energy from...Ch. 42 - Prob. 2SACh. 42 - Organisms at the first trophic level ________. a....Ch. 42 - Primary productivity on land is affected by...Ch. 42 - An _______ is an autotroph. a. producer c....Ch. 42 - Most of Earths fresh water is _______. a. in lakes...Ch. 42 - Earths largest carbon reservoir is _______. a. the...Ch. 42 - Carbon is released into the atmosphere by ________...Ch. 42 - Prob. 9SACh. 42 - The ______ cycle is a sedimentary cycle. a....
Ch. 42 - Earths largest phosphorus reservoir is ________....Ch. 42 - Plants obtain ______ by taking it up from the air....Ch. 42 - Prob. 13SACh. 42 - Soil in _______ is richest in carbon. a. the...Ch. 42 - Prob. 15SACh. 42 - Marguerite has a vegetable garden in Maine....Ch. 42 - Prob. 2CTCh. 42 - Prob. 3CTCh. 42 - Prob. 4CT
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- The producer in an ocean grazing food web is usually a _____. a. plant b. animal c. fungi d. planktonarrow_forwardThe deepest, richest soil in the world occurs in (a) temperate rain forest (b) tropical rain forest (c) savanna (d) temperate grassland (e) chaparralarrow_forwardSoil in _______ is richest in carbon. a. the arctic b. the tropics c. temperate zonesarrow_forward
- Which biogeochemical cycle does not have a gaseous component but cycles from the land to sediments in the ocean and back to the land? (a) carbon cycle (b) nitrogen cycle (c) phosphorus cycle (d) hydrologic cycle (e) neither a nor c has a gaseous componentarrow_forwardConverting a prairie to a farm field is an example of _________. a. overharvesting b. habitat loss c. exotic species d. climate changearrow_forwardWhy is the tundra treeless? a. lack of sufficient water b. permanently frozen ground c. winters too harsh d. too many firesarrow_forward
- The total dry weight of plant material in a forest is a measure of the forests: a. gross primary productivity. b. net primary productivity. c. cellular respiration. d. standing crop biomass. e. ecological efficiency.arrow_forwardThe primary producers in an ocean grazing food web are usually ________. a. plants b. animals c. fungi d. phytoplanktonarrow_forward1) A scientist finds that the gross primary productivity of the grasslands of the central United States is 55 g / m2 / year. If the respiration loss is 33 g / m2 / year, what is the net primary productivity? a) subtraction from gross productivity and respiration.b) The same as primary productivity.c) The value of respiration.d) The sum of gross primary productivity and respiration.arrow_forward
- Michael wants to build a new storage shed and is considering clearing some trees from his land to use as lumber. What justification best explains the ecological benefit of saving his trees? a Decreasing shade and windbreaks b Providing food for hundreds of species c Sequestering (storing) carbon d Aiding in discharge of aquiferarrow_forwardThese are the common threats in grassland biomes EXCEPT a. Illegal hunting b. Production of invasive species c. Deforestation d. Overgrazing of animals What is the effect of impervious surface? a. Faster seeping of water to ground b. It can cause groundwater contamination. c. Infiltration process will easily take place. d. Difficulty on seeping water to the ground creating high urban runoff.arrow_forwardWhich of the following processes lead to desertification of land in semi-arid areas? A. excessive irrigation B. intense fertilization C. overgrazing D. property developmentarrow_forward
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