Northern Hemisphere portrays the upper air westerlies having troughs as well as ridges. The upper air westerlies depicts clockwise curvature in elevation. On a weather map of the Northern Hemisphere, one can see the westerlies among the subtropical highs and subpolar lows.
Lack of educational opportunities, lack of technology, overpopulation, and uneven distribution of wealth are factors that cause poverty in low-income nations.
Natural selection conditions are reproduction, heredity, variation in fitness or organisms, and variation in individual characters of the population. Please mark me brainliest!! :)