首页|Understanding Microbes in Sickness and in Health.
Understanding Microbes in Sickness and in Health.
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NETL
Microbes are tiny organisms-too tiny to see without a microscope, yet they are abundant on Earth. They live everywhere-in air, soil, rock, and water. Some live happily in searing heat, while others thrive in freezing cold. Some microbes need oxygen to live, but others do not. These microscopic organisms are found in plants and animals as well as in the human body. Some microbes cause disease in humans, plants, and animals. Others are essential for a healthy life, and we could not exist without them. Indeed, the relationship between microbes and humans is delicate and complex. In this booklet, we will learn that some microbes keep us healthy while others can make us sick.
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