The answer would be 25%
Carbon 14 is radioactive material with 5700 year of half-time which will change it into carbon-12, a more stable substance. If the age of the fossil is 11,400 years old, then the amount of half-time passed would be: 11,400 years/ (5,700years/ half-time)= 2 half-time.
Since it undergo 2 half-time, the percentage should be: 100% * (1/2)^2= 25%
Answer:
C
Explanation:
A) By far the most groundwater is used for livestock.
B) By far the most groundwater is used by farming households.
C) By far the most groundwater is used for irrigating crops.
D) By far the most groundwater is used for public supply in farming communities.
Out of these options, I believe that the answer is C because Farmers required a lot of water for irrigation, though it depends on the time period whether it's modern day or 1700s, etc. in order to officially tell.
Hope this helps Merry Christmas
