Calcium
this is because calcium will lose will lose more electrons and is a group 2 metal, copper is a transition metal which is a lower position and more stable than calcium.
The awnser your looking for would be B: It's Population decreases. Because if a species is unable to adapt to a changing environment the species would either have to move away or they could die in that location.
Answer:
is a substance which donates an H^+ or a proton
Answer:
because it may cause burn that causes acid to build up which causes you to keep having an upset stomach
