Answer:
<em>A. 6,000 years</em>
Explanation:
Original sample N = 60 g
The half life of N/2 is 3000yrs
"""""""""""""""""""N/4 is 6000yrs
N/4 ===> 15 gram
it takes 6000yrs to decrease to 15grams
The inner planets were formed by rock
Answer:
A. Water
Explanation:
Seeds only germinate when rains occur, so death by dehydration less likely
1.The population is rising fast because of inadequate amount of knowledge about family planning.
2.Census is done to check the growth of our population.
3.
Answer:
about of people in the area
Explanation:
it is the amout of people or animals in a certain area
