The Wisdom of Elders

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Environmental Importance of Trees

Trees in our community wield properties that enrich both nature and human life. They create cooling shade, regulate ground temperature, and yield a bounty of fruits and nuts for human consumption. Additionally, trees grown as an agricultural commodity provide for an untold amount of consumable goods - timber for homes, boats, and furniture, fibers for paper goods, medicines, and heating. Trees also provide food and shelter for animals and insects. Even bees use tree sap to create wax comb and bee bread. Beyond this, trees enhance beauty, contribute to a healthy ecosystem, and play a vital role in reversing and neutralizing the negative environmental impacts of global warming. Trees also help scrub pollutants from the air and also absorb excess and purify groundwater. Trees act as "air scrubbers" by absorbing pollutants from the air during the process of photosynthesis. Trees take in carbon dioxide and release oxygen through tiny pores in their leaves called stomata. They also capture harmful pollutants such as sulfur dioxide, ammonia, and nitrogen oxides. Trees trap these pollutants on their leaves, branches, and trunks, preventing them from being released back into the atmosphere. Additionally, the process of transpiration, where trees release water vapor into the air, helps to cleanse the air and maintain a healthy environment. By absorbing and filtering these pollutants, trees play a crucial role in improving air quality and reducing the impact of air pollution on human health and the environment.

Large tree, taken from a low angle to show the sculptural expanse of exposed roots.

Care of Trees

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CSCI E-12, Fundamentals of Website Development, Fall Term 2023, with Professor David Heitmeyer
Harvard University Extension School.