Answer:
The Amazon basin spans across nine South American countries or territories: Brazil, Bolivia, Peru, Ecuador, Colombia, Venezuela, Guyana, Suriname and French Guiana. The region occupies an area of 2.6 million square miles, which represents around 40 percent of the total South American territory.
Explanation:
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 sun is powered by nuclear fusion, a process through which hydrogen is converted into helium, emitting large amounts of energy. A side effect of this process is the generation of neutrinos, ghostly fundamental particles that rarely interact with their surroundings.
Explanation:
mark me brainlist
I dont see a picture to help but for my educational guess would be c