flooding
Active (your body produces the t-cells and b-cells): Natural- by means of infection Artificial - Passive- (develops in another person and is transferred): Natural - maternal Artificial - immunization
seeds that produce fake plants; seeds that are fake
Natural is to nature as artificial is to artifice.
The definitions is : Natural- A natural plant Artificial- An artificial one
artificial
artificial
natural
Natural silk is a proteinic fiber (sericin and fibroin).
artificial can't be found in natural environment and are maken in labs
Artificial. Man made.
artificial
Artificial is not natural, is man made.