By Michael Anderson
Lifestyles is available in all shapes and types, and dwelling entities live in all kinds of habitats. There are seven features that every one existence types sharethe skill to maneuver, to experience, to breathe, to devour nutrients, to develop, to breed, and to excrete waste topic. whole with annotated illustrations that make clear complicated buildings and lifestyles techniques, this quantity surveys the elements, features, and classifications of varied residing issues and explores the evolution of lifestyles commonly.
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Additional info for A Closer Look at Living Things (Introduction to Biology)
Unmanned probes have visited every planet in the solar system, plus many moons, asteroids, and comets. Places in the solar system that seem most likely to have harbored life—most likely microbes—include Mars, Jupiter’s moon Europa, and Saturn’s moon Enceladus. All three have, or once had, liquid water at or near the surface. Saturn’s moon Titan, which appears to have lakes of liquid methane, is also of great interest. With its geologic activity and dense, nitrogen-rich atmosphere with a haze of organic compounds, Titan in several ways resembles primordial Earth.
But the bodies of the pond-dwelling animals called hydras have just two layers of cells arranged in 29 A Closer look At living things 30 Cells, tissues, And orgAns a tube. The bottom of the tube is closed, but its top contains a mouth. Slender branches of the tube form tentacles that catch food and put it into the mouth. Great numbers of cells of many kinds form the bodies of such creatures as insects, fish, and mammals. Similar cells that work together make up tissues. Tissues that work together form organs.
Each organism varies, however little, in some way 45 A Closer look At living things 46 evolution And the history of life on eArth The geologic time scale from 650 million years ago to the present, showing major evolutionary events. Encyclopædia Britannica, Inc. from its relatives. In any given environment at any given time, the organisms with traits best suited to that environment will tend to leave more offspring than the others. Offspring resemble their ancestors. Variant organisms will leave offspring like themselves.
A Closer Look at Living Things (Introduction to Biology) by Michael Anderson