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10,033 things · 1,902 votes cast · cast a vote
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| # | Thing | Description | Topic | Up/Down/Net | Score ▼ | |
|---|---|---|---|---|---|---|
| 951 |  | Old World monkey | Family of mammals | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 952 |  | Old World sparrow | Family of songbirds | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 953 |  | Oleaceae | Family of flowering plants | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 954 |  | Olfactory system | Sensory system used for smelling | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 955 |  | Olive | Species of flowering plant | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 956 |  | Oncology | Branch of medicine dealing with, or specializing in, cancer | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 957 |  | Onion | Bulbous vegetable | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 958 |  | Oomycete | Fungus-like eukaryotic microorganism | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 959 | Ophidiiformes | Order of ray-finned fish | Biology and health sciences | +0 / -0 / 0 | 0.500000 | |
| 960 |  | Ophthalmology | Field of medicine treating eye disorders | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 961 |  | Opium | Dried latex of the opium poppy containing narcotic compounds | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 962 |  | Opossum | Group of marsupial mammals | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 963 |  | Optometry | Field of medicine treating eye disorders | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 964 |  | Oral hygiene | Cleaning the mouth by brushing the teeth and cleaning in between the teeth | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 965 |  | Orange (fruit) | Citrus fruit | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 966 |  | Orangutan | Genus of Asian apes | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 967 |  | Orca | Largest living species of dolphin | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 968 |  | Orchid | Family of flowering plants in the order Asparagales | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 969 |  | Organ (biology) | Collection of tissues with similar functions | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 970 | Organelle | Specialized subunit within a cell | Biology and health sciences | +0 / -0 / 0 | 0.500000 | |
| 971 | Organism | Individual living life form | Biology and health sciences | +0 / -0 / 0 | 0.500000 | |
| 972 |  | Orthoptera | Order of insects that includes grasshoppers | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 973 |  | Oryza sativa | Species of plant | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 974 |  | Osprey | Species of bird | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 975 |  | Osteichthyes | Diverse clade of vertebrate animals | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 976 |  | Ostracod | Class of crustaceans | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 977 |  | Ostracoderm | Armored jawless fish of the Paleozoic | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 978 |  | Otorhinolaryngology | Medical specialty of the head and neck | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 979 |  | Otter | Subfamily of mammals (Lutrinae) | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 980 |  | Ovenbird (family) | Large family of small suboscine passerine birds | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 981 |  | Owl | Birds from the order Strigiformes | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 982 |  | Oyster | Variety of families of Mollusca | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 983 |  | Pain | Type of unpleasant bodily feeling | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 984 |  | Painted turtle | Species of reptile | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 985 |  | Palaeognathae | Infraclass of birds | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 986 |  | Paleontology | Study of past life through fossils | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 987 | Palliative care | Area of healthcare that focuses on relieving and preventing suffering | Biology and health sciences | +0 / -0 / 0 | 0.500000 | |
| 988 |  | Pancreas | Organ of the digestive system and endocrine system of vertebrates | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 989 |  | Pandemic | Widespread, often global, epidemic of severe infectious disease | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 990 |  | Pangolin | Mammals of the order Pholidota | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 991 |  | Pap test | Medical intervention | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 992 |  | Papaya | Species of tropical fruit plant | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 993 |  | Paramecium | Genus of unicellular ciliates | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 994 |  | Paranthropus | Contested extinct genus of hominins | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 995 |  | Parasitism | Type of interaction between species | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 996 |  | Parsley | Species of flowering plant in the celery family cultivated as an herb | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 997 |  | Parsnip | Root vegetable related to carrot and parsley | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 998 |  | Passenger pigeon | Extinct North American migratory pigeon | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 999 |  | Passerine | Perching birds of the order Passeriformes | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 1000 |  | Pea | Species of plant with edible seeds | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
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