International Operations works with the Department of Homeland Security and other U.S. agencies to vet participants in International Visitors Program events nationwide.
Life cycle. Life cycle means the stages a living thing goes through during its life. In some cases the process is slow, and the changes are gradual. Humans have various steps during their lives, such as zygote, embryo, child and adult. The change from child to adult is slow and continuous.
Some definitions of life are: 1  The quality that distinguishes a vital and functional being from a non-living or dead body or purely chemical matter. 2  The state of a material complex or individual characterized by the capacity to perform certain functional activities including metabolism, growth, and reproduction.