what is causing us to lose species on a daily basis?
oa) effects of pollution
ob) effects of ecosystems
on effects of other species

idk what the options are but

these is a strong electrostatic attraction between the ions hence a lot of energy is needed to overcome this attraction

this is why the boiling points are so high

plato users:

d.  

there was a variety of food available on island x, but there were only large seeds and nuts on island y.