Which statement describes how geologists use data from seismographs to learn about earthquakes? They often compare information from all over the world.
They map the location of an earthquake’s focus.
They use one reading to determine the location of an epicenter.
They measure the difference between the arrival times of surface waves.

genetic variation will increase because of a new habitat and food source.

explanation:

you can have just about every answer you can think of

blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. as the ventricle contracts, blood leaves the heart through the pulmonic valve, into the pulmonary artery and to the lungs where it is oxygenated.