This sort of organism feeds on other living animals?

This is the cool lightweight brittle outermost layer of the Earth that floats.            

Swirling funnel clouds over land?

Deposition of wet acidic solutions from the air?

What helps with restoration of some forests and prairies?

This killed the dinosaurs?

Transplanting organisms from an external source to a site where they have been previously reduced or eliminated?

12. Painful urination is known as:

The level of protein structure that is localized coiling or folding is 

Mannose is an example of