0
The relationship between the degree of response of the organisms and the quantity of the chemical always assumes a classic concentration-response form. The graphs represent the results of tests in which groups of the organisms of the same species were exposed to various concentrations of a chemical for a specific length of time. The least variability in the curve is at the 50% level of response. The concentration at which 50% level of the individuals react after a specified length of exposure is used as a measure of the activity or toxicity of the chemical agent.
In determining the relative toxicity of a new chemical to aquatic organisms, an acute toxicity test is first conducted to estimate the median lethal concentration of the chemical in the water to which test organisms are exposed. LC50 is the concentration estimated to produce mortality in 50% of a test population over a specific time period.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Is threshold toxicity value greater or less than LC50?
Less.
How old is your Lowery Century LC50 Organ?
15 years old
How should you use spss for lc50?
you can use analyze <regression <probit
What steps need to be taken to obtain a carers' allowance in the UK?
You can obtain a carer's allowance if you care for an individual who is ill. You must go through the application steps in order to obtain an allowance.
Can one obtain caravan steps with lighting?
You can obtain caravan steps with lighting in various hardware and furniture stores or on online sites like eBay. You can also make your own by buying LED lights and attaching them to the steps.
The steps you take to obtain meaning from a text are known as?
.the reading process
Can you draw the diagram in steps?
draw or obtain a diagram of the metric conversion step
What are the steps for salt water?
Add salt to water to obtain salt water.
Steps to converting centimeters to inches?
Divide CM by 2.54 to obtain INCH
What is the process of reading?
Type your answer here... D.The steps it takes to obtain meaning from text
What the process of reading?
Type your answer here... D.The steps it takes to obtain meaning from text
What steps would one have to take to obtain a legal separation?
The steps one would have to take to obtain a legal separation are to first meet the states residency requirements, filing a petition, filing a separation agreement, then wait for the judge to approve it.
