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
Hawaiian volcanoes- Hualalai, Mauna Loa and Maune Kea.
Answer:
Platypus Gravity Works. ...
Katadyn Hiker Water Filter. ...
Steripen Ultra UV Water Purifier. ...
Grayl GeoPress Water Purifier Bottle. ...
MSR Miniworks EX Water Filter. ...
MSR Guardian Purifier
Explanation:
I look on the internet
Answer:
( D )
Explanation:
Because their are actually about 160 of them.