Latest 2022 Graded A
Internet ✔✔A global network connecting millions of computers, making it possible to exchange
information.
nuclear power ✔✔electric or motive power generated by a nuclear reactor.
The Green Revolution ✔✔Rapid diffusion of new agricultural technology, especially new high-
yield seeds and fertilizers.
vaccine ✔✔A harmless variant or derivative of a pathogen that stimulates a host's immune system
to mount defenses against the pathogen
Malaria ✔✔A disease caused by mosquitoes implanting parasites in the blood.
Tuberculosis ✔✔An infectious disease that may affect almost all tissues of the body, especially
the lungs
Cholera ✔✔an acute intestinal infection caused by ingestion of contaminated water or food
1918 Influenza Pandemic ✔✔killed as many as 50 to 100 million people worldwide.
Ebola ✔✔A contagious viral disease originating in Africa. It is transmitted by blood and body
fluids and causes body organs and vessels to leak blood, usually resulting in death.
HIV/AIDS ✔✔the virus that causes AIDS, spread through bodily fluids rather than casual contact
or airborne