Organism Relationships
What is symbiosis?
A relationship between two organisms.
What is a biome?
A region of earth which contains plants and animals adapted to its particular climate.
What are sources for carbon?
Fossil fuels, burning forests, respiration.
What nutrient cycles are there?
Water, phosphorus, carbon, and nitrogen.
What are the organisms on the bottom of the trophic pyramid?
Producers.
What is resource partitioning?
Different organisms within an ecosystem partition resources so that they will not compete for the same resources.
What abiotic factors distinguish biomes?
Precipitation, temperature, latitude, altitude, soil, topography, and wind.
What are sinks for carbon?
Rocks and sediment, vegetation and organisms, the ocean, and the atmosphere.
What is usually the first step of the water cycle?
Evaporation.
Where is the original source of energy for trophic pyramids?
The sun.
Name the three relationships between organisms.
Mutualism, commensalism, and parasitism.
What biome is cold and has low latitude?
Tundra.
What process sequesters carbon?
Photosynthesis.
What is the first step of the nitrogen cycle?
Nitrogen fixation.
What is a trophic cascade?
A change in the population of one trophic level that leads to drastic population changes in other levels.
How does predation relate to the 'survivor of the fittest' concept?
As predators gain energy from other organisms and survive, the prey population begins to strengthen as those who have survived the predators attempts produce offspring.
What is the most diverse biome?
Tropical rainforest.
Why is carbon dioxide a greenhouse gas?
Carbon dioxide traps heat, contributing to global warming as it excesses in the atmosphere.
What is the only cycle that doesn't involve the atmosphere?
Phosphorus cycle.
What percentage of an organisms energy goes to the next level of the food chain?
What is the difference between intraspecific and interspecific competition?
Intraspecific competition is competition within one species, while interspecific competition is competition between two or more species.
Name the layers of a freshwater biome (specifically a lake).
Littoral, limnetic, profundal.
What are the two pumps in ocean acidification as carbon dioxide dissolves in water?
Organic and inorganic pumps.
How are animals and the phosphorus cycle related?
Animals bring phosphorus to land through eating oceanic organisms and excreting them into the soil.
What is positive feedback?
Initial stimulus keeps on amplifying and repeating, causing more change.