BIOL 2080 Chapter Notes - Chapter 1: Cell Nucleus, Adenine, Maltose
25 Mar 2016
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Document Summary
Much of modern science is estranged from the natural world. Society"s dependence on nature, especially plants, is forgotten. In less urbanized environments, lifestyles are more attenuated to nature. Humans have four great necessities in life: food, clothing, shelter, fuel. An adequate food supply is the most pressing need: directly or indirectly, plants and algae are the source of virtually all food through the process of photosynthesis. Plants and algae are the producers in the food chain: they are the base of most food chains, whether eaten by humans directly as primary consumers or indirectly as secondary consumers when eating beef. The oxygen given off as a by-product of photosynthesis is earth"s only continuous supply of oxygen. Plants support and enhance life on the planet. The most abundant and diverse plants in the environment are the flowering plants (angiosperms: most economically important members of the plan kingdom. More than 350 000 species of angiosperms.
