Small for gestational age (SGA) babies are those whose birth weight lies below the 10th percentile for that gestational age. Low birth weight (LBW), is sometimes used to define a baby that weighs less than 5 lb 8 oz (2500 g) regardless of gestational age.
Historical Examples. 1  The present writer has collected several hundred local wind namesâand is constantly adding to the list. 2  Because local wind systems dominate the trade winds, these deserts are less stable than other deserts.
Local winds are caused by small convection currents and global  winds are caused by large convection winds. All wind is caused by  the uneven heating of Earth's surface, whiâ¦ch sets convection  currents in motion. Answered by The WikiAnswersÂ® Community. Making the world better, one answer at a time. Global winds are caused by the unequal heating of the Earth's surface and by the rotation of the Earth. Global winds are caused by the unequal heating of the Earth's surface and by the rotation of the Earth.