The impact of so many humans on the environment takes two major forms: consumption of resources such as land, food, water, air, fossil fuels and minerals. waste products as a result of consumption such as air and water pollutants, toxic materials and greenhouse gases. * The world population is growing by approximately 74 million people per year * Population growth is not evenly distributed across the globe * Scientists are yet to conclusively determine the human ‘carrying capacity’ of Earth * Population is only one of many factors influencing the environment * We have consumed more resources in the last 50 years than the whole of humanity before us * The 20 th century saw the biggest increase in the world’s population in human history. In 2015 the world population is more than 7.3 billion people . That’s more than seven billion ...