"The vegetation must be able to adapt to unreliable precipitation and excessive heat" is the one interesting feature of the vegetation among the following choices given in the question that is <span>found in the Sahara Desert. The correct option among all the options that are given in the question is the second option or option "B".</span>
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 .
the answer is Amin was a Ugandan dictator
