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:
A b C
Explanation:
Economic push factors of immigration include poverty, overpopulation, and lack of jobs.
It is true that g<span>eologic maps demonstrate the elevations of a particular area of Earth.</span>
Japan because the names are Japanese and there is a lot of small islands around japan
Answer:
Explanation:
B
Gravitational tidal heating is stronger on Io than any other moon in the Solar System, providing a source of heat that causes its high level of geological activity.
