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Chapter 36: Problem 29

Which environmental characteristic is likely to increase if the human population continues growing unchecked? a. wilderness areas b. fresh water supplies c. fossil fuel reserves d. atmospheric carbon dioxide

Short Answer

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d. atmospheric carbon dioxide

Step by step solution

01

Identify the question's focus

The question is asking which environmental characteristic will likely increase as the human population continues to grow if left unchecked.
02

Analyze each option

Consider each option and think about how human population growth could impact it: - a. wilderness areas: More people might lead to urban expansion, reducing wilderness areas.- b. fresh water supplies: Increased population could lead to higher consumption and strain on fresh water supplies.- c. fossil fuel reserves: Growing population is likely to increase energy demand, depleting fossil fuel reserves faster.- d. atmospheric carbon dioxide: More people usually mean more industrial activity, deforestation, and vehicle use, all contributing to higher levels of atmospheric carbon dioxide.
03

Determine the correct answer

Review the environmental impacts. Human population growth generally leads to rising atmospheric carbon dioxide levels due to increased industrial activities and deforestation.
04

Confirm the answer

Conclude that among all the given options, the one characteristic likely to increase with unchecked human population growth is atmospheric carbon dioxide.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

human population growth
Human population growth refers to the increase in the number of individuals in a given area over a specific period. This growth can have profound effects on the environment as more people require more resources to sustain their lives. These resources include food, water, shelter, and energy, among others.
When the population grows, it puts pressure on these resources and can lead to several environmental impacts:
  • Increased consumption of natural resources such as water, minerals, and fossil fuels.
  • Expansion of urban areas, leading to loss of natural habitats and wildlife.
  • Greater waste production, leading to potential pollution issues.
  • Higher energy demands often met through fossil fuels, contributing to greenhouse gas emissions and global warming.

Increased human population also means more industrial and agricultural activities, often causing adverse environmental changes.
atmospheric carbon dioxide
Atmospheric carbon dioxide (CO2) is a greenhouse gas that traps heat in the earth鈥檚 atmosphere, contributing to global warming and climate change. As the human population grows, activities that increase CO2 levels also rise. These activities include burning fossil fuels for energy, transportation, and heating.
High CO2 levels lead to more severe climate impacts such as:
  • More frequent and intense weather events like hurricanes, droughts, and floods.
  • Rising global temperatures causing glaciers and ice caps to melt.
  • Disruption of natural ecosystems and extinction of species unable to adapt.
This is why reducing CO2 emissions is crucial for future environmental sustainability.
environmental sustainability
Environmental sustainability involves using natural resources in a way that meets current needs without compromising the ability of future generations to meet their needs. Achieving sustainability requires a balance between social, economic, and environmental factors.
Promoting sustainability can help manage the impacts of population growth by:
  • Advocating for renewable energy sources such as solar and wind.
  • Encouraging sustainable agricultural practices that protect soil health and biodiversity.
  • Promoting conservation efforts to protect natural habitats and biodiversity.
Sustainable practices aim to reduce pollution, manage waste effectively, and use resources judiciously to ensure that ecosystems remain viable and productive for the long term.
industrial activity
Industrial activity includes any process involved in manufacturing goods and services. While such activities are essential for economic development and improving living standards, they can have significant environmental impacts.
As population grows, industrial activities typically increase, leading to:
  • Higher emissions of pollutants such as CO2, sulfur dioxide (SO2), and nitrogen oxides (NOx).
  • Increased energy consumption, often from non-renewable sources like coal and oil.
  • Greater demand for raw materials, leading to over-extraction and habitat destruction.
To mitigate these impacts, the adoption of cleaner technologies and processes is crucial. Industries can reduce their environmental footprint by improving energy efficiency, using less toxic substances, and better waste management.
deforestation
Deforestation is the large-scale clearing of forests, typically for agriculture, urban development, or logging. As human population grows, the need for land intensifies, resulting in more forest areas being cleared.
The consequences of deforestation include:
  • Loss of biodiversity as species lose their natural habitats.
  • Increased atmospheric CO2 levels since trees that absorb CO2 are removed.
  • Disruption of water cycles, affecting rainfall patterns and water availability.
Deforestation also exacerbates climate change and leads to soil erosion and desertification. Sustainable forestry practices, reforestation, and protecting existing forested areas are essential measures to combat these adverse effects.

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Most popular questions from this chapter

A flask of nutrient broth, buffered to maintain pH, is inoculated with a strain of E. coli. The flask is placed in a constant temperature environment where it is aerated by shaking. A. Predict the effect of a change in energy availability over time. B. Represent the change graphically in terms of the number of cells as a function of time. C. In your graph as time progresses there is a change in the growth rate of the population. Add annotation to your graph to describe the time interval during which the growth rate is increasing linearly in proportion to the number of cells. Add annotation to your graph to describe another time interval during which the growth rate is decreasing in proportion to the square of the number of cells. Add a third annotation to describe an interval of time where the rate of growth is zero. D. Select and justify two measurements of the E. coli population that could be made at two different points in time during growth that would be sufficient to answer questions about the population size at any time. E. Describe the population of E. coli if the environment was continuously supplement by additional nutrient broth.

In some species, males expend a lot of energy in courtship rituals, whereas in other species, males expend much less energy in other ways of attracting mates such as producing colorful plumage. What does this mean for any energy that left over males of these species might have to devote to care for offspring? a. Males of species carrying out courtship rituals assist in parental care whereas males that use colorful plumage to attract mates do not assist with the parental care. b. Males of species carrying out courtship rituals do not assist in parental care whereas males that use colorful plumage to attract mates have energy available to assist with parental care. c. Males of species carrying out courtship rituals as well as species of males that use colorful plumage to attract mates, both would assist with the parental care. d. Males of species carrying out courtship rituals as well as species of males that use colorful plumage to attract mates would not assist in parental care as the females would be involved.

Frogs are amphibians and spend time both on land and in water. Female frogs are vulnerable to predation by fish when they enter the water to lay eggs. A hypothesis has been proposed that frogs rely on chemical detection of predators in addition to visual detection. In other words, frogs detect the presence of predator fish by chemicals released by fish into the water. Design an experiment to test this hypothesis. a. Arrange containers of water in which water can be freely shared between two compartments. Fish are contained within one compartment and frogs in another such that the frogs on one side cannot see or hear fish on other side. Observe and compare the egg laying behavior of female frogs in the presence and absence of predator fish in the fish tank. b. Arrange containers of water in which water can be freely shared between two compartments. Fish and frogs are contained within one compartment such that frogs cannot see or hear fish. Observe and compare the egg laying behavior of female frogs in the presence and absence of predator fish. c. Arrange containers of water in which water can be freely shared between two compartments. Fish and frogs are contained within one compartment such that frogs can see or hear fish. Observe and compare the egg laying behavior of female frogs in the presence and absence of predator fish in the fish tank. d. Arrange containers of water in which water can be freely shared between two compartments. Fish are contained within one compartment and frogs in another such that frogs on one side can see or hear fish on other side. Observe and compare the egg laying behavior of female frogs in the presence and absence of predator fish in the fish tank.

Describe how the quantity of waste from human activities can be expected to change in the next 50 years and why. Explain how that change could impact a specific ecosystem. a. The amount of waste generated by human activities will increase exponentially as the human population continues to increase exponentially. Removal of waste would require a decrease in habitats, which will lead to decrease in populations of species dependent on those habitats. b. The amount of waste generated by human activities will increase exponentially as the human population continues to increase exponentially. Removal of waste will require an increase in habitats, which will lead to exponential increase in populations of species dependent on those habitats. c. The amount of waste generated by human activities will decrease exponentially as the human population continues to increase exponentially. Removal of waste would require an increase in habitats, which will lead to exponential increase in populations of species dependent on those habitats. d. The amount of waste generated by human activities will decrease exponentially as the human population continues to increase exponentially. Removal of waste will require a decrease in habitats, which will lead to decrease in populations of species dependent on those habitats.

What evidence can you cite to support the claim that the timing of entry into hibernation by grizzly bears is regulated? Justify why this evidence supports the claim. a. Grizzly bears go into hibernation at the end of winters. This observation provides evidence that there is some environmental cue that triggers physiological changes in bears. b. Grizzly bears do not go into hibernation at the beginning of autumn. This observation provides evidence that there is some environmental cue that triggers physiological changes in bears. c. Grizzly bears go into hibernation at random times during the year. This observation provides evidence that there is some environmental cue that triggers physiological changes in bears. d. Grizzly bears do not go into hibernation at random times during the year. This observation provides evidence that there is some environmental cue that triggers physiological changes in bears.
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