Questão número 637958

Your answers to questions 21 and 22 must be based on the text below, which is entitled "The technologies to halt global warming":

According to the article, "The technologies to halt global warming for 50 years already exist." In other words, global warming may be

• A.

  researched.

• B.

  successfully mapped.

• C.

  gradually increased.

• D.

  decreased.

• E.

  stopped.