The fact is that there is enough food in the world for everyone. But tragically, much of the world's food and land resources are tied up in producing beef and other livestock--food for the well off--while millions of children and adults suffer from malnutrition and starvation.
A metrical foot of two syllables, one short (or unstressed) and one long (or stressed). There are four iambs in the line "Come live/ with me/ and be/ my love," from a poem by Christopher Marlowe. (The stressed syllables are in bold.) The iamb is the reverse of the trochee.