Humans are deuterostomes. Deuterostomes belong to the even larger bilateria group. The bilateria group of organisms is thus named because the organisms are bilaterally symmetrical with matching left and right sides to th... More »

Humans breathe approximately 432 liters of oxygen per day, and that oxygen helps the tissues in the human body function properly. The body needs approximately 352.8 liters of oxygen per day when the body is at rest. More »

Humans have 90 to 150 eyelashes on the upper lid and 70 to 80 eyelashes on the lower lid of each eye. Eyelashes on the upper lid are longer than those on the lower lid and grow up to 10 millimeters in length. More »

Humans exhale carbon dioxide because it is a waste product of cellular respiration. Too much carbon dioxide in the blood causes a condition called acidosis, which lowers blood pH. More »

Humans are in the Hominidae family in Linnaean classification. Members of this family are called hominids. Orangutans, gorillas, chimpanzees and bonobos, considered the great apes, are also members of the Hominidae famil... More »

Humans can survive in a rainforest provided there is reasonable access to food, water and shelter, and appropriate measures are taken to address and avoid dangers. Tropical rainforests are typically found along the Inter... More »

Humans belong to the phylum Chordata. Humans are part of this phylum, because they have a notochord when they are in the womb; this notochord will eventually turn into a spinal cord. More »