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 .
Measuring in light-years also allows astronomers to determine how far back in time they are viewing , Because light takes time to travel to our eyes. Everything we view during the dark in night has already been happened.
Answer:
1.Unpredicible and noncyclic.
Explanation:
Answer:
D. Auscultate lung sounds
Explanation:
find out what it is before you treat
other 3 options are treatments
Auscultate : stethoscope listening to lungs & heart sounds
furosemide is blood pressure medicine
saline is salt water
