I like to define biology as the history of the earth and all its life – past, present, and future. To understand biology is to understand that all life is linked to the earth from which it came; it is to understand that the stream of life, flowing out of the dim past into the uncertain future, is in reality a unified force, though composed of an infinite number and variety of separate lives. Rachel Carson
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The concept of evolution is an important tool for understanding our world. It shows that all life has evolved from earlier forms in response to changes in the environment. These changes in the environment include both chemical and physical ones, such as climate or competition for resources. Evolution also shows how species within the same genus can diverge in their development over time, leading to species that are very different from one another. The concept of evolution helps us understand how life differs from one organism to another, which can lead to better decisions when trying to understand the relationships between species.

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  1. It is a curious situation that the sea, from which life first arose should now be threatened by the activities of one form of that life. But the sea, though changed in a sinister way, will continue to exist; the threat is rather to life...
  2. The aim of science is to discover and illuminate truth. And that, I take it, is the aim of literature, whether biography or history... It seems to me, then, that there can be no separate literature of science.
  3. The winds, the sea, and the moving tides are what they are. If there is wonder and beauty and majesty in them, science will discover these qualities... If there is poetry in my book about the sea, it is not because I deliberately put it...
  4. Those who contemplate the beauty of the earth find reserves of strength that will endure as long as life lasts. There is something infinitely healing in the repeated refrains of nature -- the assurance that dawn comes after night, and spring after winter.
  5. If facts are the seeds that later produce knowledge and wisdom, then the emotions and the impressions of the senses are the fertile soil in which the seeds must grow.
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