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Learn high school biology using videos, articles, and NGSS-aligned practice. Explore the fundamentals of cells, organism growth and development, photosynthesis and cellular respiration, molecular and classical genetics, natural selection and evolution, biodiversity and human impacts, and ecology.
Pygmy hippopotamus. Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
Key terms. Phylogeny helps scientists organize species or other groups in ways that represent our understanding of how they evolved from common ancestors. Phylogenetic trees. In a phylogenetic tree, or cladogram, the species or groups of interest are found at the tips of lines referred to as the tree's branches.
Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
Sprawdź swoje umiejętności w zakresie objętym tą ścieżką. Zacznij wyzwanie z kursu. Część 1: Podstawy biologii. 0/500 punktów mistrzowskich. Metoda naukowa w biologii Ważne cząsteczki w biologii Woda i życie. pH, kwasy i zasady. Część 2: Komórki. 0/800 punktów mistrzowskich.
Learn high school biology using videos, articles, and NGSS-aligned practice. Explore the fundamentals of cells, organism growth and development, photosynthesis and cellular respiration, molecular and classical genetics, natural selection and evolution, biodiversity and human impacts, and ecology.
The biology archive contains legacy biology content, and is not being updated with new content. Exercises and mastery mechanics will soon be removed from the biology archive. For our most up-to-date, mastery-enabled courses, check out High School Biology and AP Biology !
