General science

General science

A variety of science subjects concerning the fundamental knowledge about different aspects of our world and their underlying principles.

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General science

A class of Sarcodina including both parasitic and free-living species found in fresh and salt water and the soil. No species forms true axopodia; instead, pseudopodia may be filopodia, lobopodia, or ...

actinopodea

Science; General science

A class of Sarcodina; or in some modern schemes a superclass (Actinopoda) within the phylum Sarcomastigophora. Some of these protozoans have more or less permanent pseudopodia, composed of a central ...

monosaccharide

Science; General science

A class of simple sugars containing a chain of 3–10 carbon atoms in the molecule, known as polyhydroxy aldehydes (aldoses) or ketones (ketoses). They are very soluble in water, sparingly soluble in ...

sclerosponge

Science; General science

A class of sponges that lay down a compound skeleton comprising an external, basal mass of calcium carbonate, either aragonite or calcite, and internal siliceous spicules and protein fibers. The ...

hexactinellida

Science; General science

A class of sponges whose skeletons are made of siliceous hexactine spicules. These exclusively marine sponges are widely distributed in modern oceans. Their fossil record extends from the late ...

actinopterygii

Science; General science

A class of teleostom fishes commonly known as the ray-finned fishes comprising the subclasses Cladistia (Polypteriformes and fossil orders), Chondrostei (Acipenseriformes and fossil orders), and ...

zygomycetes

Science; General science

A class of terrestrial fungi in the phylum Zygomycota, reproducing sexually with a zygospore and asexually by sporangiospore or conidium. The Zygomycetes are one of two classes of the phylum ...