Answer:
i'd say that Sub-Saharan Africa is really poor, and whilst there are people whom are trying to help them, there just isn't enough people willing to contribute to helping the Africans
Explanation:
Https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0ahUKEwjascq6vOLM...
You will find the information you need here. :3 Good luck!
(Says I have to cite my sources so here goes: I just copy/pasted your question into Google lol)
I think is alternative a because that includes the earth
Answer:
three half-lives
Explanation:
Converting 12.5% to decimal gives 0.125
If one half life is 0.5.
0.5*0.5*0.5 gives 0.125
Thus 3-half lives has been elapsed
It allows the grass and plants time to replace themselves when the animals migrate.
