Which phrases describe radioactive elements? check all that apply.
a-occur in nature
b-decay at a constant rate
c-have a consistent number of particles
d-have a half-life that determines their rate of decay
e-release energy and particles to maintain radioactivity

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the