When threatened, some animals respond with a flight or flight response. Flight or fight responses can be stimulated by internal and external stimuli. Using the table, which of the situations includes a "fight" response from an external stimulus

It is used to during sexual reproduction between humans

The answer is atmosphere. there are four spheres of the earth: 1. geosphere (from greek word 'geo' = ground), 2. hydrosphere (from greek word 'hydro' = water), 3. biosphere (from greek word 'bio' = life), and 4. atmosphere (from greek word 'atmo' = air). a magnetosphere is a region of space around astronomical objects controlled by the magnetic field of that object. through the process of elimination, since lightning is present in the air, it can be found in the atmosphere.