lecture quiz 1 : a water sample reveals that the following chemical contaminates were found in it...

Lecture Quiz1: A water sample reveals that the following

chemical contaminates were found in it (Phosphates, Nitrates, and Sulfides).

Based on this you can conclude that the water body is being contaminated by what type of source?

2: A water sample reveals that the following chemical contaminates where found in it (Copper and ph value 4.5). Based on this

you can conclude that the water body is being contaminated by what type of source?

Lecture Quiz1. A water sample reveals that the following

chemical contaminates where found in it (Phosphates, Nitrates, and Sulfides). Source - SEWAGE

2. A water sample reveals that the following chemical contaminates where found in it (Copper and ph value 4.5). Source - INDUSTRIAL/HAZARD WASTE

FACT - Biological contamination of surface water is morecommon than chemical

contamination.

FACT - Biological contaminates cause more illnesses

than a chemical

contaminate.

Protozoa: Single cell organisms.

Types1. Plantlike (Autotrophs)

2. Animal (Heterotrophs)

Plantlike Protozoa (Autotrophic). T hey can produce their own food like a land plant because they have the chemical, chlorophyll that can convert sunlight, water, and carbon dioxide into glucose sugar.

Euglena

Volvox: A fresh water algae that form into a spherical colony.

Algae

Algae bloom = rapid growth of algae in a surface water body like an ocean, lake, or pond due to overabundance of food (nutrients).

Alga Bloom (The Series of Effects) A thick layer of algae form near the

surface blocking sunlight from reaching plants below. This will cause these plants to die and sink to the bottom of the water source.

Decomposers (aerobatic bacteria) breakdown the dead organism and begin to overpopulate using up the dissolved oxygen (DO).

Alga Bloom (The Series of Effects)

Fish, crustaceans, and shellfish suffer due to oxygen deprivation and eventually will die from suffocation if they remain in the area of the alga bloom..

Alga bloom on the Colorado River

Dead fish from an ocean alga bloom (Red Tide).

Animal Protozoa (Heterotroph): 1. Amoeba: * A shapeless one-celled mass. * Most amoeba are not harmful to

humans except the Dysentery Amoeba.

* This amoeba carries the disease dysentery

which causes diarrhea and vomiting. The disease is transmitted

through feces material that was in the water or

food.

Amoeba

2. ParameciumA single cell protozoa with

cilia (hair- like) which they use for locomotion.

Plasm odium(D)

Paramecium causes the disease malaria and is

transmitted from the bite of a mosquito.

Paramecium

Bacteria versus Virus

Bacteria

E. Coli: A bacteria found in the intestines of animals and humans.

The presence of E Coli in water is a strong

indication of recent sewage or animal waste contamination.

Viruses

The Cycle of a Virus

How the West Nile Virus is transferred

Viruses

West Nile Virus

- The virus is carried by a species of mosquitoes.

-Affects people with weak immune systems

•Infants

•Elderly

•People suffering from illness