Human activity has had a significant impact on the carbon cycle as it relates to the ocean. Activities such as combustion of fossil fuels and land use changes have led to a new flux of CO2 into the atmosphere. The increases of CO2 in the atmosphere have led to much of the excess being stored in the ocean, causing the pH of the ocean to decrease, becoming more acidic. The effects of ocean acidification include all BUT:

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.

D. peatlands,grassland,swamps