"We know that, on average, each tree absorbs from 13 to 48 pounds of carbon dioxide per year. We have planted 15 trees. How much carbon dioxide absorption will the trees we’ve already planted enable in the next 50 years?" Five math problems with an environmental theme.
A one page reading comprehension selection introducing and explaining the terms "reduce" "reuse" and "recycle" and their importance to Earth. It is followed by 4 multiple choice questions, 3 vocabulary matching questions, and 4 questions requiring short written responses.