When a tectonic plate sinks under another it's called subduction.
Today's Question:
What are the two main types of immune system lymphocytes?
I know killer T cells and macrophages fit in there somewhere but I think that's just part of the whole system.
(Sources: American Mensa, email transmission, September 9, 2011; http://www.platetectonics.com/; http://www.geocraft.com/WVFossils/subduction.html; http://www.moorlandschool.co.uk/earth/tectonic.htm; http://geology.com/plate-tectonics.shtml; http://www.medterms.com/script/main/art.asp?articlekey=4220)
Compiled by Otto and Patricia Ladensack
No comments:
Post a Comment