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 .
Answer:
The tides would occur at a much lower intensity.
Explanation:
Tides are caused by two main factors, the moon, and the wind. The moon plays a bigger part. SO, if the moon were to suddenly begone, scientists estimate that there would still be tides, but just much smaller, maybe about 1/3 of their original size.
Answer: Indonesia
Explanation:
It has 147 volcanoes in which 76 are still active.
<span>When you are operating a boat 28 feet long on federal waters, you must have an oil placard and garbage disposal placard on display.
Oil placard must be at-least 5 x 8 inches in size, and garbage disposal placard or save our seas placard must be at-least 4 x 9 inches in size. These cards must displayed in a prominent location.</span>
Answer:
At the top theres less air and a higher elivation
Explanation:
