4. 5 .The natural population replacement fertility rate in the U.S a) 2.1 births per woman b) 3.9 births per woman c) 3.1 births
per woman d) 4.2 births per woman The rate at which new disease or mortality events will occur in a population in a given period of time. a) The biological gradient
1.weathered materials from rocks and transported to the beach through wind and rivers 2.from rocks weathering and eroding over thousands and millions of years.
