The correct answer is option D
The main cause of global warming is the green house gases that contributes more towards global warming.
The carbon dioxide produced from the transportation is the main green house gas. Transportation being the major source of carbon dioxide contributes towards global warming.
Reducing the amount of green house gases will help in the reduction of the global warming.
Alternating current electricity. This allowed electricity to flow further than Edison's first DC approach.
Railroads - allowed for transportation of materials to growing small cities, and large cities to become larger.
Antibiotics and antiviral medicines. - stopping deadly diseases and bacteria from spreading. This helped with many problems that would normally terminate 33% of populated areas that are infected.
Negative symptoms are defined as things that the client loses instead of gains in regards to symptoms.
The nurse should watch for reductions in alertness, concentration, sleep, appetite, good mood, and social activity.
Hope this helps!