In order to generate electricity, power plants emit harmful ...

[Davideckstein7]

In order to generate electricity, power plants emit harmful _________________ga ses.
 
  Fill in the blank(s) with the appropriate word(s).

Question 2

For electricity to stop and start flowing through a circuit, a device called a ___________ must be placed in the circuitry.
 
  Fill in the blank(s) with the appropriate word(s).

[ky860224]

Answer to Question 1

greenhouse

Answer to Question 2

switch

[Davideckstein7]

Gracias!

[robbielu01]

Thanks for the timely response, appreciate it