AP Environmental Science: Unit 8 Review - Aquatic & Terrestrial Pollution

Vectors

Vectors

________- organism that can transmit diseases between humans.

Tuberculosis

________- cause: breathing in the bacteria from body fluids of an infected person symptoms: bacteria attack on lungs.

Malaria

________- cause: bites from infected mosquitoes symptoms: flu- like.

MERS

________- cause: inhaling or touching fluids from infected animals /humans symptoms: flu- like.

SARS

________- cause: inhaling or touching infected fluids symptoms: pneumonia & flu- like.

Human

________ Impacts on Ecosystems.

Biomagnification

________- increase in concentration of substances per unit of body tissue that occurs in successively higher trophic levels of a food chain or in a food web.

Oligotrophic waterways

________- have low amounts of nutrients, stable algae populations, high dissolved oxygen.

LD50

________- amount of a substance lethal to 50 % of a population.

Cholera

________- cause: bacterial disease from infected water symptoms: diarrhea, vomiting, dehydration.

Eutrophication

________- increase in nutrients in aquatic environments can lead to algal blooms-> algal bloom dies-> microbes digest algae and oxygen in the water-> decrease in dissolved oxygen levels-> large die offs of aquatic organisms.

Plague

________- cause: bite of an infected organism or through contact with contaminated fluids symptoms: flu- like.

Primary treatment

________- physical removal of large objects, often through the use of screens and grates, followed by the settling of solid waste in the bottom of a tank.

Thermal pollution

________- occurs when heat released into the water produces negative effects to the organisms in that ecosystem.