Bioaccumulation

Biodiversity refers to

• extinct species

• the variety of species in an ecosystem

• nonrenewable resources

• the rate of species decline

An endangered species is

• One whose numbers are so small that it is at risk of extinction
  
• One whose not been spotted after many years.
• One whose numbers are abundant.

The loss of a natural habitat is called

• Habitat development

• biodiversity

• Pollution

• Habitat destruction

Activity that decreases the amount of oxygen and increases the amount of carbon dioxide.

• deforestation

• burning fossil fuels

• greenhouse effect

• climate change

Pesticides and herbicides eventually show up in higher level consumers due to

• climate change

• bioaccumulation

• habitat destruction

• fertilizer runoff

Carbon dioxide, methane, water vapor, and ozone in the atmosphere which absorb heat

• acid rain

• greenhouse gases

• bioaccumulation

• fragmentation

Precipitation that contains high amounts of chemical pollutants that injures plants and pollutes the soil and rivers/oceans

• herbicide

• pesticide

• beach erosion

• acid rain