Which type of hormone is able to cross cell membranes?

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this

if you look up in the top right corner you'll see your current profile picture, click than click "view profile" you'll be able to change it there.