The areas around the North and South poles within the Polar circles is called _____________?
A. The torrid zone
B. The frigid zone
C. The temperature zone
D. The hardiness zone
“Rancidity produced in butter can be decreased by adding quinoline to the butter”. This statements shows that _______________?
A. Nothing is impossible
B. Quinoline is an inhibitor
C. Quinoline is a catalyst
D. Quinoline is an activator