Answer:
The correct answer for this question in option C
Explanation:
A dwarf planet can be defined as a celestial body that orbits around the sun, but is not large enough to clear the area around its orbit of other objects because they are similar to regular planets with enough mass and gravity that help them to be rounded but are that small that they have their path full of objects like asteroids. As regular planets dwarf planets travel in space in the same path around the sun. but with a big difference; that is, dwarf planets can have a clean path around them as regular planets. There are some dozens of these dwarf planets in our solar system. Some of them are far away to be analyzed and the most famous dwarf planet known is Pluto and one called CERES that was the first dwarf planet where a spacecraft has landed
Answer:
b. measuring the pulsations of the Sun from stations around the world.
Explanation:
The Global Oscillation Network Group (GONG) is a community-based program that wants to conduct a detailed study of the internal structure of the sun by using helioseismology. GONG relies on a team of six observatories around the world to perform its work. One of the duties of GONG is to measure the pulsations of the Sun from six stations located all over the world.
I think it is the first one
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 .
