Bulk movement of water across plasma membranes and the exchange of oxygen from blood into cells are similar in that the method of transport is by:

Bulk movement of water across plasma membranes and the exchange of oxygen from blood into cells are transported in the method of DIFFUSION. It is driven by concentration gradient or difference. Normally happens from higher concentration to lower concentration.

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.