unit 8 exam study
The estimated maximum volume of oil spilled during the deepwater horizon spill would be approximately
190 million gallons
The Clean Water Act was passed in _____
1972
What is the LD 50 for this curve
20mg
The percentage of coastline along the gulf that was directly affected by the Deepwater Horizon spill was
37%
What could be an unplanned disadvantage to spraying pesticides to kill mosquitos?
AN unplanned disadvantage can be that you can kill other insects by spraying it because it an be blown by the wind into other areas cause you are spraying it outside your house or insects can come by and also die while you are spraying it.
The supposed vector for Ebola was
Bat
A toxin that is absorbed faster than it is excreted is an example of
Bioaccumulation
Persistent Organic Compounds all contain ________.
Carbon
Which organism would be a good indicator species showing that the pH had changed from 5.8 to 5.2
Crayfish
Which of the following best describes why DDT is classified as a POP?
DDT is very stable and as much as 50% of the original concentration can remain in the soil 15 years after the initial application
Which of these is NOT an ecological service provided by wetlands?
Energy generation
Persistent organic chemicals are mosty
Fat Soluble
Which of the following examples includes both a point and a non point source of pollution
Fertilizer from suburban lawns and wastewater from a water treatment plant.
Which of these is not a hormone?
Hemoglobin
An ________ in temperature causes a ______ in dissolved Oxygen
Increase, Decrease
Which of these best describes the action of an endocrine disruptor?
It blocks the receptor protein binding site of a hormone so the cell cannot receive a signal
What is the dependent variable in this experiment?
Length of root
Which nutrient causes these dead zones?
Nitrogen
Which of the following best describes a way that persistent organic pollutants cause harm in the environment?
POP's are soluble in fat, so they accumulate in an organisms' fatty tissues
Only in the optimum range of tolerance organisms would be able to _________.
Reproduce
What is the independent variable in this experiment?
Salt concentration
Which of these is NOT a point source pollution
Salt on roadways dissolving into a creek
Describe how a population of trout will be impacted by an increase of temperature in their stream
The population of traut will be decreasing/impacted because an increase in tempuature is a decrease in disolved oxygen ans disolved oxygen is nessasary for aquadic animals.
What is the control group
Those seeds NOT exposed to the salt water.
What is the experimental group
Those seeds exposed to the salt water
Factors that increase the spread of infectious disease include all of the following, EXCEPT
exposure to neurotoxins, which affect the endocrine system