4) Read the passage. 4)) Our early ancestors were hunter-gatherers who obtained food by hunting and by searching for edible wild plants. They needed strong bones, including large, strong jak that enabled them to eat tough, uncooked foods. When our ancestors developed agriculture, however, their diet changed. They began growing plants, such as grains an beans, and raising animals for food; they also started cooking their foods, making thei softer and easier to chew. Consequently, the human skeleton underwent radical chang Over time, the human jaw became smaller and changed shape. Other bones also evol becoming lighter, especially in the joints, as a result of both dietary changes and a les: active lifestyle. 4)) What is the main, or central, idea of the passage? As early humans developed agriculture, their bones changed significantly. Early humans ate uncooked meats and vegetables, so they needed strong jaws for chewing. Submit
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As early humans settled into agriculture, their bones adapted to a softer diet, leading to a smaller jaw and lighter bones. This shift highlights the profound impact our diet has on both our physical structure and lifestyle. Imagine a time when humans roamed the earth hunting mastodons and foraging for wild berries! The transition to agriculture not only changed how they sourced food but also marked the beginning of communities, trade, and modern civilization. So, grab a fork and appreciate those plant-based dishes – they shaped our ancestors just as they’ve shaped us!
