Scientists determined that the LD50 for a particular chemical toxin was a dosage level of 175 mg/kg of body mass for a
test population of rats. Assuming that the toxic effects
observed in rats is the same for similar mammals of a larger
size, what dosage level would be needed to kill 50% of the
population of mammals who typically have a body mass of
22 kg.

Which of the following covers all qualified higher education expenses

Maynard jackson to oversee significant growth during his time as atlanta's mayor. which of these important public works projects was maynard jackson not responsible for during his time as atlanta's mayor?

Select the statement that is not true about the hubble telescope: a. it orbits above the earth, avoiding the light distortion caused by our atmosphere. b. it is mounted high on a hawaiian mountaintop to provide stable images. c. it has allowed scientists to see the formation of far-away stars and solar systems, leadin some certainty about the history of our own solar system. d. it has documented the destruction of far-away stars and galaxies, leading to some certa the theories of the life cycles of stars.