The elements listed in the choices are radioactive materials. These materials are very unstable because of the high neutron-to-proton ratio in the nucleus. Because of this, they spontaneously undergo nuclear reactions by giving off sub-particles in order to lower the ratio. They emit radiation in the form of alpha, beta or gamma.
Half-life is the length of time it needs to completely react half of the original amount. For example, it would take Bismuth 60.5 seconds to use up half of its amount. Therefore, the lower the half-life the faster the reaction is and the lesser the residual amount will be. With that being said, the answer would be Bismuth because it only takes seconds.
Answer:
Under the compromise, every enslaved American would be counted as three-fifths of a person for taxation and representation purposes. This agreement gave the Southern states more electoral power than they would have had if the enslaved population had been ignored entirely
<span>Well, I'm pretty sure there are four. The northern and southern hemispheres, and then the eastern and western hemispheres.</span>
Answer:
This is an example of adaptation and enviromental pressure.
Explanation:
Say you were to move to somewhere where the climate is nothing like you are used to. You would have to adapt to the new climate. The animals in the Boreal forest have to adapt to the climate and know they don't get food in the winter.
The cold weather forces them to do this, honestly. So this is also an example of enviromental pressure bc nature is pressuring them to do this.
Hope this helps
