a When most people can't read. - illiterate
b The opposite of war. - peace
c What you get when chemicals go into rivers. - pollution
d When people arrive in another country to live there. - immigrants
e People live in this when they are very poor. - poverty
f When people treat others badly because of the colour of their skin. - racism
g A problem affecting children when they don't have enough to eat. - hunger
h When countries fight each other. - war
Ответ: illiterate; peace; pollution; immigrants; poverty; racism; hunger; war