Answer:
perceptual region
Explanation:
popular views of the sahara desert, is based on imagination and perception. Hence, the answer.
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
Explanation:
Because South America is covered in two sides, the long coast line in chile, and the other side with brazil
The major player of the earth that's liquid is the outter core