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安裝中文字典英文字典辭典工具!
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- Animals in Mythology - Encyclopedia. com
Animals in Mythology Theme Overview Since the beginning of human history, people have lived in close contact with animals—usually as hunters and farmers—and have developed myths and legends about them All kinds of creatures, from fierce leopards to tiny spiders, play important roles in mythology A myth can give special meaning or extraordinary qualities to common animals such as frogs
- Plant - Encyclopedia. com
Plant A plant is any organism in the kingdom Plantae Kingdoms are the main divisions into which scientists classify all living things on Earth The other kingdoms are: Monera (single-celled organisms without nuclei), Protista (single-celled organisms with a nucleus), Fungi, and Animalia (animals) The scientific study of plants is called botany
- Bacteria - Encyclopedia. com
Bacteria Definition Bacteria are prokaryotes (unicellular organisms with no membrane-enclosed nucleus) with simple structures that typically range in size from about 0 5 to 20 micrometers Description Classification Bacteria are named according to the binomial (two-name) system of nomenclature first used by Swedish botanist Carolus Linnaeus in the eighteenth century The first name, or generic
- Marine Invertebrates - Encyclopedia. com
Marine Invertebrates Invertebrates are animals that do not have a bony internal skeleton, although many do have hard outer coverings that provide structure and protection More than 90% of all animals are invertebrates and they are classified into at least 33 major groups, or phyla Nearly every phylum of invertebrates has members that live in the oceans Six phyla of invertebrates that are
- Kingdoms of Life - Encyclopedia. com
The eukaryotic Plantae, Fungi, and Animalia kingdoms contain mostly multicellular eukaryotes that differ in their structures, modes of nutrition, and life cycles (before reproduction)
- Bacterial Kingdoms - Encyclopedia. com
Bacterial kingdoms Bacterial kingdoms are part of the classification scheme that fits bacteria into appropriate groupings based on certain criteria The kingdom is the broadest classification category Source for information on Bacterial Kingdoms: World of Microbiology and Immunology dictionary
- The Search for New Systems of Classification | Encyclopedia. com
The Search for New Systems of Classification Overview As naturalists began to expand their reach and study more and more of the Earth, they began to find such a bounty of plants and animals that the current and relatively informal practice of naming new discoveries quickly became outdated Botanists and zoologists found themselves overwhelmed and unable to keep track of the different organisms
- Extinction and Endangered Species - Encyclopedia. com
Chapter 1 Extinction and Endangered Species Earth is richly supplied with different types of living organisms, including animals, plants, fungi, and bacteria Various living organisms co-exist in their environments, forming complex, interrelated communities Living organisms depend on one another for nutrients, shelter, and other benefits The extinction of any one species can set off a chain
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