What does a seismograph record?
a.
the mercalli scale rating for an earthquake
b.
the speed of seismic waves
c.
the ground movements caused by seismic waves
d.
the location of the epicenter

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?

The pressurized plants and fungi mentioned in the video have some surprising similarities. what differences would you expect them to have?

In the first stage of the nuclear fuel cycle the spent fuel must be transported, processed, and disposed of properly. true or false