Examlex
Members of the class Monoplacophora were believed extinct until some living specimens were found off the coast of Costa Rica in 1952.
Social Sciences
A branch of science that deals with the institutions and functioning of human society and the interpersonal relationships of individuals as members of society.
Progressive Era
A period of widespread social activism and political reform in the United States from the 1890s to the 1920s, aimed at eliminating problems caused by industrialization, urbanization, immigration, and political corruption.
Booker T. Washington
Booker T. Washington was an influential African American educator, author, orator, and advisor to presidents of the United States in the late 19th and early 20th centuries, who advocated for African American advancement through education and entrepreneurship.
W.E.B DuBois
An American sociologist, historian, and civil rights activist who was a leading figure in the fight for African American rights and co-founder of the NAACP.
Q3: Evidence points to the ray-finned fishes (Actinopterygii)as
Q4: One of the most studied nematodes,whose genome
Q13: Ectoprocta<br>A)live in marine and freshwater habitats.<br>B)typically form
Q14: A unique characteristic of echinoderms is<br>A)the endoskeleton
Q20: During metamorphosis of sea stars,the left side
Q27: Flatworms differ from nematodes (roundworms)by having<br>A)a coelomate
Q27: The _ were jawed fishes which lived
Q45: In birds,reproductive organs of both sexes shrink
Q47: Leeches<br>A)have a fixed number of somites.<br>B)respire through
Q47: The scientific name of the worm lizards,Amphisbaenia,describes