All the following play important roles in metal corrosion except
a. The heterogeneity of alloys
b. Concentrating the rusting solutions
c The contact between less active to the
more active metals
d. The purity of metals

Answer is in the photo. I can't attach it here, but I uploaded it to a file hosting. link below! Good Luck!

cutt[dot]ly/lxkFVRg

a small container that holds a source of energy a solar cell that captures light energy and converts it into electricity a voltaic cell that uses the oxidation of a fuel to produce electricity

explanation:

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary