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%
The best answer is A.) They can poison soil organisms, because pesticides contain chemicals that can be dangerous to plants.
Answer:
A.
Explanation:
All living things (whether a plant or an animal) will have cells
Answer:
A solid rock becomes soil when it breaks down and combines with water, air, and organic matter. The correct answer would be #3
Explanation:
