President Dwight D. Eisenhower announced the Eisenhower Doctrine in January 1957, and Congress approved it in March of the same year.
Tribulus terrestris is an annual plant in the Caltrop Family (Zygophyllaceae) widely distributed around the world, that is adapted to grow in dry climate locations in which few other plants can survive.It is an invasive species in North America.ne study found that administration of Tribulus terrestris extract can produce statistically significant increases in levels of testosterone, dihydrotestosterone and dehydroepiandrosterone, and produces effects suggestive of aphrodisiac activity.
Carpobrotus, commonly known as pigface, ice plant, and Hottentot plant, is a genus of ground-creeping plants with succulent leaves and large daisy-like flowers. The name refers to the edible fruits.It comes from the Ancient Greek karpos (fruit) and brota (edible).The genus includes some 12 to 20 accepted species.arious Carpobrotus species are invasive introduced species in suitable climates throughout the world. The harm they do is variable, and sometimes hotly debated, when balanced against their value as firebreaks and as food for wildlife.