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 .
Two friends are reading books. Jimmy reads a book with 21,356 words. His friend Bob reads a book with one-and-a-half times as many words. Which expression represents the number of words Bob reads?
21,356 x 2
21,356 x one fourth
21,356 x one half
21,356 x one and one half
Answer:
It allows for easier access to other South American countries for trade.
I hope this helps you!
The circle with diameter of 24 means that 2
r = 24.
Solving for r, we get
r=24.
Dividing both sides by
, we get r=24/
.
The area of the full circle is
times 24 squared over
. The
being multiplied cancels out, meaning that 24 squared over
is the area of the full circle. 24 squared is 576, and dividing by 16 we get
as the answer.
Answer:
V. Moderate
IV–V falls within the range of
4.0–4.9 so we put at 4.9
Explanation:
This V. Moderate earthquake is the type felt by nearly everyone, with many people awakened. Some dishes and windows are usually broken, and unstable objects are overturned such as books in a bookcase. Pendulum clocks may also stop.
