Tsundere is a pretty common term used in the anime community but there are still many who don't know what is actually means. Tsundere is actually a term derived by fans to classify a type of anime character that is becoming more common, usually a female lead.
Throughout the Corps more than 4,000-mile journey, Captains Lewis and Clark recorded 178 plants and 122 animals not previously known to science. Lewis recorded and pressed and preserved some 240 different plant species and brought them back to Washington, along with hundreds of animal and bird skins and skeletons.
Major Discoveries. Anton Van Leeuwenhoek's single most important discovery was the existence of single-cell organisms. While using a microscope to examine pond water in 1674, he observed dozens of protists, which he called ' animalcules ,' as well as spirogyra, or green alga.