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| 2478301005 | Ecology | The study of the density and distribution of organisms and the factors that cause changes in density distribution | 0 | |
| 2478303884 | Why are some parts of the world warm and some cold? | Energy either hits the earth at a right angle or oblique angle and spreads across the earth's surface | 1 | |
| 2478306743 | Why do we have seasons? | This is due to the the tilt of the earth and its rotation around the sun |  | 2 |
| 2478314170 | Primary factors controlling level of net primary production in terrestrial biomes | Temperature and moisture, these determine how well plants will grow | 3 | |
| 2478315668 | Primary factors controlling level of net primary production in aquatic biomes | Light and nutrients, these determine how efficient photosynthesis is and what must be added for production to increase | 4 | |
| 2478432807 | Limiting Nutrient | Related to aquatic biomes, it is the elements that must be added for production to increase, usually nitrogen or phosphorus | 5 | |
| 2478316784 | Primary producers | The trophic level that ultimately supports all others of autotrophs | 6 | |
| 2478316785 | Primary Consumers | Herbivores that eat plants and other primary producers | 7 | |
| 2478317968 | Secondary Consumers | Carnivores that eat herbivores | 8 | |
| 2478319161 | Tertiary Consumers | Carnivores that eat herbivores and other carnivores | 9 | |
| 2478320376 | Gross Primary Production | Amount of solar radiation that hits a plant and enters the photosynthetic process; usually about 1% and goes toward maintenence of plant and creating new biomass | 10 | |
| 2478322069 | Net Primary Production | Biomass from plants that's consumed by primary consumers; about 40-60% of plant biomass and becomes feces or assimilated energy for maintenance of animal and new animal biomass | 11 | |
| 2478325752 | Assimilation | How much energy an animal can take in depending on their diet, energy goes to maintenance of animal and production efficiency | 12 | |
| 2478506900 | Production Effiency | Percentage of incoming energy that can be used for new biomass | 13 | |
| 2478327287 | Why can GPP never equal NPP | NPP is a percentage of GPP NPP=GPP-autotrophic respiration | 14 | |
| 2478330363 | Why production efficiency of a consumer can never equal 100% | Some energy must be used to maintain the animal, thy animal can't just keep growing and growing | 15 | |
| 2478543096 | Decomposer | AKA Detritivores; group of heterotrophs that get their energy from detritus | 16 | |
| 2478585806 | Trophic Efficiency | The percentage of production transferred from one trophic level to the next | 17 | |
| 2478590639 | 10% Rule | Trophic efficiency is usually 10%, so 90% of the energy from a trophic level is released to the environment from waste and respiration | 18 | |
| 2478651491 | Traits all animals share | Multicellular, locomotion at some point in life, reproduce sexually, chemoheterotrophic, nerves and muscles, characteristic embryonic development that includes blastula and gastrula | 19 | |
| 2478660167 | Diploblastic Animals | 20 | ||
| 2478660168 | Triploblastic Animals | 21 | ||
| 2478667672 | Ectoerm | Develops into epidermis | 22 | |
| 2478669390 | Endoderm | Develops into lining of digestive tract | 23 | |
| 2478675239 | Mesoderm | Develops into muscles and most of the internal organs and also is the lining of the coelom | 24 | |
| 2478676460 | Coelomate | 25 | ||
| 2478677345 | Pseudocoelomate | 26 | ||
| 2478678816 | Acoelomate | 27 | ||
| 2478681200 | Embryonic Development in Protostomes | 28 | ||
| 2478683212 | Embryonic Development in Deuterostomes | 29 | ||
| 2478685973 | Ecdysozoan | 30 | ||
| 2478690611 | Lophotrichozoan | 31 | ||
| 2478697588 | 4 Traits all Chordates share | Dorsal hollow nerve cord, pharengeal gill slits, notocord, and post anal tail | 32 | |
| 2478700775 | Advantages of a cranium and vertebral column | 33 | ||
| 2479688339 | Abiotic | Nonliving factors like the chemical and physical attributes of the environment | 34 | |
| 2479689693 | Biotic | Living factors such as other organisms | 35 | |
| 2479706505 | Photic Zone | The upper area in water where there is sufficient light for phototsynthesis | 36 | |
| 2479707293 | Aphotic Zone | The lower area in water where little light penetrates and is not sufficient for photosynthesis | 37 | |
| 2479714729 | Pelagic Zone | The entire area in a body of water that light may or may not be able to penetrate | 38 | |
| 2479794329 | Homospory | One type of spore like in nonvascular and vascular plants | 39 | |
| 2479800480 | Heterospory | Two types of spores like in gymnosperms and angiosperms | 40 | |
| 2479801529 | Adaptive Radiation | Usually occurs after major extinction events or formation of new islands; rapid speciation as organisms adapt to fill unoccupied niches | 41 | |
| 2479844227 | Sporophyte | Diploid, multicellular organism that makes spores in plants | 42 | |
| 2479845568 | Gametophyte | Adult, haploid, multicellular organism in plants that makes gametes | 43 | |
| 2479847902 | Alternation of generations | 44 |
