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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 ▼ | |
|---|---|---|---|---|---|---|
| 501 | Digestion | Biological process of breaking down food | Biology and health sciences | +0 / -0 / 0 | 0.500000 | |
| 502 |  | Dimetrodon | Genus of carnivorous synapsids from the Permian | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 503 |  | Dingo | Canid species native to Australia | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 504 |  | Dinoflagellate | Aquatic, unicellular protists with two flagella | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 505 |  | Dinosaur | Clade of reptiles | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 506 |  | Diospyros | Genus of trees and shrubs | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 507 |  | Diphtheria | Bacterial disease | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 508 |  | Diplodocus | Genus of diplodocid sauropod dinosaurs (fossil) | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 509 |  | Diprotodontia | Order of marsupial mammals | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 510 |  | Disease | Condition negatively affecting an organism | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 511 |  | Dissection | Cutting procedure used in anatomy | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 512 |  | Dodo | Extinct species of bird | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 513 |  | Dog | Domesticated species of canid | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 514 |  | Domain (taxonomy) | Taxonomic rank | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 515 |  | Domestic turkey | Species of bird | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 516 |  | Donkey | Domesticated animal primarily used for transportation | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 517 |  | Dopamine | Organic chemical that functions both as a hormone and a neurotransmitter | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 518 |  | Dormouse | Family of rodents | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 519 |  | Douglas fir | Species of tree | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 520 |  | Down syndrome | Genetic disorder | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 521 |  | Dragonfly | Raptorial winged insects | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 522 |  | Dromedary | One-humped camel | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 523 |  | Drosophila melanogaster | Species of fruit fly | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 524 |  | Drug | Substance having effect(s) on the body of an individual | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 525 |  | Duck | Common name for many species of bird | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 526 |  | Dung beetle | Informal group of insects | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 527 |  | Durian | Tropical fruit | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 528 |  | Dysentery | Intestinal inflammation causing bloody diarrhea | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 529 |  | Dyslexia | Learning disability affecting reading | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 530 |  | Eagle | Large bird of prey | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 531 |  | Ear | Organ of hearing and balance | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 532 |  | Eared seal | Family of marine mammals | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 533 |  | Earwig | Order of insects | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 534 |  | Eastern copperhead | Species of reptile | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 535 |  | Ebola | Hemorrhagic fever caused by ebolaviruses | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 536 |  | Echidna | Family of mammals | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 537 |  | Echinoderm | Marine phylum of animals often with radial symmetries | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 538 |  | Ecological niche | Fit of a species living under specific environmental conditions | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 539 |  | Ecology | Study of organisms and their environment | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 540 |  | Ecosystem | Community of living organisms together with the nonliving components of their environment | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 541 |  | Eel | Order of fishes | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 542 |  | Egg | Organic vessel in which an embryo first begins to develop | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 543 |  | Egg cell | Female reproductive cell | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 544 |  | Eggplant | Plant species | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 545 |  | Electric eel | Genus of fishes in South America | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 546 |  | Elephant | Largest living land animal | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 547 |  | Elk | Species of deer | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 548 |  | Elm | Flowering, deciduous trees, family Ulmaceae | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 549 |  | Embryo | Multicellular diploid eukaryote in its earliest stage of development | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
| 550 |  | Emu | Large flightless bird endemic to Australia | Biology and health sciences | +0 / -0 / 0 | 0.500000 |
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