関連ワード:
what are some resources that are scarce today what are some resources that are scarce what are some natural resources that are scarce what are resources that are scarce what are some resources that are becoming increasingly scarce in the world what natural resources are scarce in california what natural resources are scarce in canada what natural resources are scarce in brazil what natural resources are scarce in japan what are three natural resources that are scarce in the world today
