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1003 Topic Pages Found in Biology
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Open Abdomen

In vertebrates, the part of the body below the thorax , containing the digestive organs; in insects and other arthropods, it is the hind part of the

Open Abortion

Worldwide, some 46 million women have abortions every year. Of these abortions, only slightly more than half are legal, that is, take place under


( Әkā'shӘ ), any plant of the large leguminous genus Acacia, often thorny shrubs and trees of the family Leguminosae ( pulse family). Chiefly of the

Açaí palm

( ä´´säē' ), tree, Euterpe oleracea, of the family Arecaceae ( palm family) and its fruit, grown chiefly in Pará state in the Amazon region of Brazil.

Open Acanthocephala

Abstract The Acanthocephala or thorny-headed worms constitute a group of about 1100 species of endoparasites. Sexual maturity occurs in the gut of a

Open Acne

Skin eruption, mainly occurring among adolescents and young adults, caused by inflammation of the sebaceous glands , which secrete an oily substance

Open Adaptation (Biology)
Adaptation (Biology)

In biology, a trait of an organism that increases its chances of success in its environment. Animals and plants adapt to changes in their environment

Open Adolescence

Historically, adolescent development has been described as tumultuous, which is sometimes attributed to increased emotions and an undeveloped

Open Adrenal glands
Adrenal glands

Triangular endocrine gland situated on top of the kidney . (The name derives from the Latin word for kidney – ad-renal and supra-renal meaning next to

African buffalo

species of short-haired African ungulate, or hoofed mammal, Syncerus caffer. The cape, or African, buffalo may reach 7 ft (2.1 m) in length, weigh