HUMAN IMPACT

Which of the following is not a possible effect of global climate change resulting from human activity?

• Shifting rainfall patterns can lead to famine.

• Increasing temperatures can lead to drought.

• Reduction of ice pack can lead to lack of fresh water.

• Increasing nitrogen levels could lead to sea level rise.

The concentration of carbon dioxide in the atmosphere has been increasing since the Industrial Revolution. Which of the following descriptions of human activity causes a climate change by increasing carbon dioxide concentration in the atmosphere?

• increasing the amount of trash in landfills

• ozone depletion increasing skin cancer cases

• planting trees, releasing more oxygen into the atmosphere

• releasing pollutants into the atmosphere by combustion of fossils fuels

Following global concern regarding the depletion of the ozone layer, monitoring over the last two decades has shown an increase in ozone. Which of the following is the most likely reason for this new trend?

• Humans have been burning more fossil fuels.

• Humans have increased their carpooling behaviors.

• Humans have reduced their use of chlorofluorocarbons.

• Human scientists have released an ozone gas to patch the layer.

Which behavior would not reduce groundwater pollution?

• proper disposal of motor oil

• using solar panels to supply electricity

• reducing pesticide use in agriculture

• reducing the use of lawn fertilizer

Plastic bottle use, recycling, and disposal have many environmental implications. One effect is the creation of floating transportation, allowing species to move around the planet. How does the movement of species effect biodiversity?

• invasive species contribute to biodiversity

• invasive species disrupt existing habitats

• organisms can easily migrate

• organisms can find protections from predators

Which of the following is NOT found CFCs?

• Chlorine

• Fluorine

• Carbon

• Oxygen

Old air conditioners in Florida contain a harmful compound that can cause ozone depletion when released. Which example is categorized as a compound that causes this reaction in the atmosphere caused by the old AC units?

• carbon dioxide

• carbon monoxide

• CFC's

• methane

In some parts of the world, deforestation is occurring at an increased rate as rainforests are cut down in order to plant oil palm trees. What is not a consequence of this deforestation?

• increased erosion leading to increased silt deposits in rivers

• increased habitat destruction leading to decreased biodiversity

• increased photosynthesis leading to decreased carbon dioxide levels

• increased burning of trees to clear land leading to increased carbon dioxide levels

Bernardo, an environmental science student, needs a topic for his school science fair project. He is entering his project in the category of “Sustainable Tourism.” Which example would be the best topic to fit in that category?

• Sustainable tourism must include risk taking for economic factors.

• Sustainable tourism must include a culture making extreme sacrifices.

• Sustainable tourism must include conservation for environmental purposes only.

• Sustainable tourism must include economic, environmental, and socio-cultural sustainability.

A remote village is located near the ocean and several rivers. The climate is usually partially cloudy with periodic winds. The village advisory committee is reviewing several alternative energy sources. Committee members want to select a source that produces very little pollution, reduces greenhouse gases, is renewable, and is cost-effective over time.

Which energy source should they choose?

• coal

• hydroelectric

• nuclear

• solar