Why some countries are much more developed than others?

Explain why components that are naturally found in air can be considered air pollutants.

Click the item in the left column. use the plus sign to move it up or the minus sign to move it down until it matches the correct entry in the right column. lock your answer in place by clicking the square beside the item. (a checkmark means it is locked.) amazon basin a atacama desert b andes mountains c lake titicaca d peru e patagonia f brazil g chile h suriname

Combine like terms. do not forget to use the distributive property to simplify the first term. 2(3y + 5k) - 2k