Bromine. both Bromine and Mercury are both a liquid at STP. :)
The quality of being easily dissolved in liquid.
Hope this help and Happy holidays
The answer is C :
It controls the entry and exit of substances.
The *independent* variable is the one that you always can control. However, the dependent variables are not since they **depend** on another.
C describes plastics that can be recycled. Thermoplastic can be remolded and reheated after forming, whereas thermoset strengthens when heated
