are unicellular organisms with no nucleus that can cause diseases and pain with toxins. word bank: protists, antibiotics, infectious, bacteria, pathogen, viruses, fungi, vector, vaccine.

halogen, any of the six nonmetallic elements that constitute group 17 (group viia) of the periodic table. the halogen elements are fluorine (f), chlorine (cl), bromine (br), iodine (i), astatine (at), and tennessine (ts).

lysosome is this part of the cell is surrounded by a very thick outer membrane to protect the rest of the cell from its strong enzymes.

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.