Scientists are interested in determining if selenium, from a nearby mine, magnifies in the tissues of fish living in a lake. Whi
ch of the following best describes a testable hypothesis for the study? a.Tissue from fish in the lake will have a higher level of selenium than tissue from fish in a nearby lake.
b. Selenium will be at a higher concentration in fish tissue than in the tissue of fish prey.
c. Fish will have a higher concentration of selenium than mercury in their tissues.
d. Selenium will be at a higher concentration in acid mine drainage than in fish tissues.
To test if the selenium from the mine has an effect on the fish living in the lake which i assume is close to the mine, testing the tissue of the fish from that lake and comparing it to the selenium levels of the fish from a nearby lake would be a testable hypothesis because there is a comparable aspect and there should be a difference in the numbers between the fish from the two lakes because of their distance to the mine.
An electromagnetic wave is a transverse wave that can travel across space as well as through matter. When it travels through space, it doesn't lose energy to a medium as a mechanical wave does.
The fossil record gives evidence of extinct species. The fossil record shows that organisms always remain the same. Which best describes how the fossil record is
