Answer:
Explanation:
Rivers may be contaminated by sewage.
I do hope I helped you! :)
Answer:
D
Explanation:
Respiration is the process by which you get energy from food. So energy in food is converted to a form that can be used by the body
1.1 / 2 = .7 --> 2.86 yrs
.7 / 2 = .45 —> 5.72 yrs
.45 / 2 = .225 —> 8.58 yrs
.225 / 2 = .1125 —> 11.44 yrs
So, for the sample of plutonium to reach .140 mg it should take a little less than 11.44 years.
Hope this helps
the answer is A.) the moon is orbiting the earth once per month
its the only logical answer, the others are either impossible or illogical
