Name any appliances that can step down d.c. voltage.

A transformer is used to step down a.c. voltage. What appliance will you used to step down a d.c.voltage?

Name any freshwater cnidarian.

Name any two C_4 plants.

Name any two plasticizers.

Why transformer cannot be used the step up D.C. voltage?

Name any four dicots.

Name any two mammals.

Name any five insulators.