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Human Population – Growth & Age Structure (4.2) State Standard SB4A. Investigate the relationships among organisms, populations, communities, ecosystems, and biomes. SB4D. Assess and explain human activities that influence and modify the environment such as global warming, population growth, pesticide use, and water and power consumption. Chapter 4 Population Ecology 4.2 Human Population Human Population Growth Rate The human population experienced ____________ growth as humans benefitted from the Industrial ____________, improved ____________ production, improved ____________ care, & disease cure/prevention Chapter 4 Population Ecology 4.2 Human Population Human Population Growth Rate Cont’d Although the human population is still growing, the rate of its growth has ___________. Diseases like ______ & also ____________ population control have contributed to this slowing. Chapter 4 Population Ecology 4.2 Human Population Trends in Human Population Growth Population trends can be altered by events such as __________ and ________. Human population growth is ________ the same in all countries. Chapter 4 Population Ecology 4.2 Human Population Trends in Human Population Growth Cont’d ____________ ___________ ____________ (ZPG) occurs when the birthrate equals the death rate. The age structure eventually should be more balanced with numbers at ______reproductive, ____________, and ______reproductive ages being approximately equal. Chapter 4 Population Ecology 4.2 Human Population Trends in Human Population Growth Cont’d Age Structure A population’s _____ __________ is the number of males and females in each of ______ age groups: pre-reproductive stage, reproductive stage, and postreproductive stage. Chapter 4 Population Ecology 4.2 Human Population Trends in Human Population Growth Cont’d Human Carrying Capacity Scientists are concerned about the human population reaching or _________ the carrying capacity. An important factor is the amount of ___________ from the biosphere that are used by each person.