Scientists today know a great
deal about ocean floor topography. Only 50 years ago, however, most scientists
believed that the ocean floor was a flat and featureless environment. Which of the following technologies or tools played the largest role in altering this thinking?
A - seismometer
B - sonar
C - particle accelerator
D - magnetometer

How many neutrons does a atom of cobalt have?

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

Drug abuse will not lead to physical and psychological dependence. true or false ?