Answer:
a) calculating the concentration at which 50% of the test organisms of a particular species die
Explanation:
Bioassays -
<u>Bioassays is an analytical method to assess the effect of marine pollutant on the organism by estimating the concentration at which 50% of the test organisms die after exposing the test organisms for a specified time.</u>
It can be done by quantitative or by qualitative experiment , or direct or indirect .
It is used to detect the biological hazards or give the quality assessment of the mixture .
It is also used for the monitoring the quality of water .
6x+4y=13
-(3x+4y=8.5)
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3x=4.5 =x=4.5/3=1.5
It will be 1.5
suggestsbl specific interventions or strategies to address the issues at hand
360 = sqaure triangle = 180every quadtrilaterel = 360
Parrelogram is always a quadtrolaterl parrelogram = 2 sets of parrelstrapzoid = a triangle with the tip cut offrhombuse = all the sides have to be equal
Please excause my dear ant sallyPlease = Parenthesesexcuse + exponentmy dear = multiplication or/ divisonant sally = addition and subtraction
