Human Impact

Which term describes the practice of managing resources so that current needs are met without harming future generations?

• species introduction

• sustainability

• habitat fragmentation

• biomagnification

What is global warming

• the normal temperature fluctuations of Earth's climate cycle

• the melting of the polar ice caps

• the trend of increasing temperatures on Earth

• the changes in Earth's biosphere that affect the atmosphere

The threat to biodiversity that occurs when the homes of different species are destroyed

• pollution

• habitat destruction

• overexploitation

• climate change

When human-made chemicals and garbage find their way into nature and harm the air, soil, and water it is called

• pollution

• habitat destruction

• overexploitation

• climate change

Identify the process shown in this diagram.

• Extinction
• Toxin Accumulation
• Pollution
• Biomagnification

What long-term impact could the destruction of large areas of forests have on Earth?

• decreased rates of erosion
• increased atmospheric carbon dioxide levels
• decreased amounts of acid rain
• increased atmospheric oxygen levels

Invasive species are:

• non-native
• harmful to an ecosystem
• organisms that can lack predators in the new environment
• all of the answers are correct

Define deforestation

• The cutting down & removal of all or most of the trees in a forested area.
  
• A broadleaf evergreen forest that is found in hot regions, receives a lot of rain and that has very tall trees.
  
• The act or process of damaging or ruining something.  To treat poorly or w/out respect.

How can the planting of new trees help reduce climate change?

• Trees help create breezes.
• Trees release moisture that cools the atmosphere.
• Trees take in carbon dioxide from the atmosphere during photosynthesis.
• Trees block the release of greenhouse gases from soil.

Which of these is a MAJOR cause of acid rain?

• spraying pesticides on crops
• burning fossil fuels for energy
• dumping sewage in river systems
• using uranium to generate electricity