Answer:
1. Polonium
2. Mercury
3. Arsenic
4. Francium
5. Lead
<em>these</em><em> </em><em>5</em><em> </em><em>elements</em><em> </em><em>are</em><em> </em><em>very</em><em> </em><em>very</em><em> </em><em>dan</em><em>gerous</em><em>.</em><em>.</em><em>.</em>
<em>hope</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>u</em><em> </em><em>plz</em><em> </em><em>mark</em><em> </em><em>as</em><em> </em><em>bra</em><em>inlist</em>
Small leaves protect desert plants from animals that eat plants.
SI is a base 10 standardized system. I hope this helped and if not I highly recremend talking to your teacher or a parent.
Answer:
Natural selection leads to evolution.
Stable elements are those which have atleast one isotope with no tendency to "decay", i.e., change into anotherelement.