Which of the following statements best describes the goal of the European Union?

Can someone list any possible solutions to air pollution ?

What is the result of the greenhouse effect? a. heat is deflected from the atmosphere. b. heat is released from the atmosphere. c. heat is kept in the atmosphere. d. plants are able to grow in the tropics where the air is the heaviest.

What does 2[tex] {2}^{ - 4} \times {2}^{ - 2} [/tex]