| A | B |
|---|
| shortage | an amount of something that is not enough |
| foaming | full of bubbles that form in a liquid such as soap; frothing |
| species | a group of animals or plants that are similar and are able to mate and have offspring |
| continent | a large area of land |
| scarce | not enough to meet a demand |
| focus | to concentrate or center; fix |
| included | to put into a group, set, or total |
| alert | watching out for danger; attentive |
| introduce | present something |
| opportunities | chances to do something |
