Answer:
Cd, Cr, Cu, Hg, Pb, and Zn
An obligatory parasite is a parasite that can not complete its life cycle without exploiting a suitable host
It was used till the 1960s. Hope i helped.
All elements are made of "atoms", and an atom is made up from 3 basic particles: Electrons are particles with a negative charge :)
There are several examples that can be used as an implied power of Congress. The action that is a correct example, out of the choices given, is establishing the bank of the United States. The correct answer is B.
