The carbon cycle diagram label

Answer(a); // soil salinization and waterlogging;

343^x = 49^4-xx = 4-xx+x=42x = 4x = 4/2x = 2therefore x = 2

There is no map, maybe give the link, it may be b

The scientist can conclude that there is a decrease in the natural resources due to human activities. because of innovation and modernization of the environment, then there goes pollution and other bad effects that destroys the natural resources.