Answer:
because there might be changes in the future which could make the estimates unreliable for example war or decline in economy
Explanation:
Not completely sure cuz I don’t know what the required reading is, but the US is probably the most dependent on imported oil
Formation of groundwater i think
Answer:
<em><u>I</u></em><em><u> </u></em><em><u>hope</u></em><em><u> </u></em><em><u>this</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>what</u></em><em><u> </u></em><em><u>you</u></em><em><u> </u></em><em><u>are</u></em><em><u> </u></em><em><u>searching</u></em><em><u> </u></em><em><u>for</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>