E-waste that can contain valuable metals and also toxic chemicals include _______

  The country with the world’s most total proven reserves of coal is ___________

Worldwide, how many children experience stunted growth due to undernutrition?

Which of the following is true of plastic trash that ends up in ocean garbage patches?

“Superweeds” are weeds that _____________

  The mass number of an atom is the _______

  A general rule says that after _____half-lives, radioactive material has decayed enough to be rendered safe.

What was a drawback to implementing modern farming methods in China and India?

Which of the following does NOT have environmental costs associated with it?

  What is true of large hydroelectric dams?