Answer:
A. Tama
Explanation:
Hindi ko po sure kung tama
I could be wrong but this one seems to make the most sense so D. none
Developed along waterways so that settlers could have access to water for crops and food
Answer:
A
Explanation:
I'm not in Ap but it was a easy enough
Answer:
50 atoms have decayed during that time
Explanation:
The radioactive decay is represented as

Where N is the amount of radioactive element after a certain time period
N0 is the amount of radioactive element during the initial time period
X is the half life of the radioactive element
Substituting the given values in above equation, we get:
atoms
So, 50 atoms of carbon-14 remain are left after decaying for 5700 years.
Hence, atoms of carbon-14 that decay during 5700 years are 100-50 - 50