The average depth of the oceans is about 4300 meters (m). Why do most of the marine organisms live in the top 200 m of the ocean waters?
a. Marine organisms thrive in high salinity, and the water near the surface has the highest salinity.
b. Marine organisms are healthier in the coldest waters, and the water near the surface is the coldest.
c. Many marine organisms are consumers living where food is abundant, and the water near the surface
has many producers.
d. Many marine organisms better survive in water with a low pH, and the water near the surface has the lowest pH
due to high carbon dioxide levels.

Amolecule of one atom of carbon and two atoms of oxygen would be written oco? осо, o co2 o 200

Which of these is most likely to happen if parallax measurements of star distances are taken after a gap of six months? the results would be accurate the results would be inconsistent the results would not be valid the results would not be repeated

Which statements best describe the differences or similarities between a comparative investigation and an experimental investigation? check all that apply. experimental investigations are best for showing cause-and-effect relationships, while comparative investigations do not necessarily show this type of relationship. comparative investigations are often impractical and unrealistic, while experimental investigations are the most practical and realistic kinds of investigations. comparative investigations allow for the use of a wide range of variables but do not have a control group, while experimental investigations involve variables that can be controlled. both experimental investigations and comparative investigations are designed to answer scientific questions. both experimental investigations and comparative investigations focus on making observations rather than collecting new data.