Not all of these examples are effective, but the idea is to present history not as something complete but as something unfolding; it is really an appeal to experience.
Clover and various grasses, for example, are effective in removing petroleum from soil.
It might, for example, be effective to punish students who fail to memorize patriotic statements, or to pay students for community service, but the ethics of those approaches would be controversial.
Mobile devices with touch screens, for example, are effective for selecting objects, but they are much less effective for the precise positioning operations upon which conventional molecule drawing software relies.
Monoclonal antibodies targeting tumor surface antigens such as HER2/neu, CD20, EGF receptor and CD52, for example, are effective for the treatment of other malignancies, through immune cell-dependent and independent mechanisms [8].
A vitamin A capsule, for example, is effective for up to 6 months and costs as little as 2 cents.
Most family planning methods, such as oral and injectable hormonal contraceptives, implants, intrauterine devices (IUDs) and sterilization, for example, are effective against unwanted pregnancy, but do not protect against STDs.
The probiotic Lactobacillus johnsonii strain La1, for example, was effective in inhibiting the development of atopic dermatitis in NC/Nga mice only when administered right after weaning (Inoue et al. 2007).
Laser therapy, for example, is effective in treating some pelvic adhesions.
