Biomes and Ecosystems
Which process returns nitrogen to the largest reservoir?
What is denitrification by denitrifying bacteria?
A bottom-heavy age structure diagram is indictive of a country with...
What is a rapidly growing population?
What is stage 2 demographic transition/developing country?
Nitrogen monoxide NO, is a pollutant released from the combustion of fossil fuels in car exhaust. This would be classified as which type of air pollutant?
What is a primary air pollutant?
Soil is formed when pioneer species begin to breakdown exposed rock, small grasses and plants begin to take root, unit evenutally there is a biodiverse habitat. This process is known as...
What is primary succession?
Paper and timber are harvested from which ecosystems?
What are forest ecosystems?
The underlying subsoil of this biome is permafrost, which prevents both water draining through and deep-rooted plants from growing. Additionally, there is very little precipitation per year.
What is the tundra
A population of yeast exponentially grows when there is enough sugar to feed on. The shape of the growth curve would be?
What is a j-curve?
What is thermal inversion?
Due to geographic isolation, island anoles developed different dewlaps which prevented some lizards from mating with others. Which process is best represented by this statement?
What is speciation?
Overgrazing public lands to the point of soil nutrient depletion is an example of this
What is tragedy of the commons?
A group of African Wild Dogs living and interbreeding in one area at the same time would best describe ...
What is a population?
What is "the total fertility rate of the society decreases"?
A lake experiences an increase in soluble heavy metal concentrations and a drop in pH from 7.2 to 6.1. A scientist hypothesis that the most likely cause of this would be ...
What is runoff that contains acid mine drainage?
What is a keystone species?
What is "Antarctica has a fragile ecosystem which is venerable to disturbances"?
The water cycle contains a variety of processes such as evaporation and condensation, in which energy is lost and gained by water molecules throughout the hydrosphere. This statement best supports what law?
What is the second law of thermodynamics?
Columbia had a population of 38.0 million people, if the growth rate is 1.7, what will be the population of Colombia in five years?
What is 41.3 million people?
What is the air pollutant that causes mesothelioma from exposure?
What is asbestos?
What is the result of slash and burn agriculture on global climate and why?
What is increased concentrations of carbon dioxide due to sequestered carbon being released in the atmosphere causes global temperatures to rise?
The process of extracting and separating which element in remote regions often results in contamination of drink water sources?
What is lead?
The net primary productivity of a pine forest is about 175,000kcal/m2/yr and the plant respiration is estimated to be 115,000kcal/m2/yr. What is the the gross primary productivity of this ecosystem?
Which type of species is often times an r-selective species, eats a wide variety of diet, can tolerate changes in habitat characteristics, and sometimes serves the role of an invasive species?
What is a generalist species?
These organic compounds are used heavily as pesticides and herbicides, but do not break down easily in the environment. These compounds are known as...
What is POPs persistent organic pollutants
Oysters are very sensitive to changes in salinity in estuaries. Scientists study oyster populations to determine the water quality. This is because oysters are _________ species of the the estuary?
What is an indicator species?
The process of obtaining low mineral ore from tailings piles by spraying the pile with sulfuric acid and then collecting the resulting copper (II) sulfate solution to extract more copper is called?
What is heap leach extraction?