Name an external stimulus that would cause a dog to fight. Explain why this stimulus would cause the dog to fight. -easy question, basically giving out points

Abanana plant produces rhizomes, which are involved in

Metamorphic rocks are formed when sedimentary or igneous rocks are subjected to heat or pressure and recrystallize without melting. which of the following rocks results from the metamorphism of limestone? a. granite b. slate c. sandstone d. marble

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?